Integrated systems for wire and cable installations.
Abstract
Pulling eyes are provided with integrated wiring systems suitable for installing conductors or cables. The pulling eyes may include body portions that define interior cavities that are sized to snugly engage outside portions of the conductors or cables. The body portions are sized to be deformably crimped onto the outside portions of the conductors or cables. The pulling eyes may also include head portions joined to the body portions, with the head portions defining apertures for receiving a strength member for installing the conductors or cables. These apertures place the interior cavities in communication with the exteriors of the pulling eyes.

Term
3.5 yearsleft in the term
Expires 22 March 2030.
- Priority
- Filed
- Granted
- Today
- Expires
11 claims: 5 independent, 6 dependent
- 1REIVINDICACIONES 1. Un método para preparar un conductor para _ instalarlo, el método que comprende:aplicar un primer indicio a una porción de cuerpo de un ojal de arrastre en una primera posición en la porción de cuerpo;aplicar un segundo indicio a la porción de cuerpo del ojal de arrastre en una segunda posición en la porción de cuerpo, I primer indicio y el segundo indicio que indican un ord n secuencial para aplicar una pluralidad de dobleces a la porción de cuerpo, en donde el primer indicio indica que un prim r doblez de la pluralidad de dobleces será aplicado a la primera posición antes de que un segundo doblez de la pluralidad de dobleces sea aplicado a la segunda posición, y en donde I segundo indicio indica que el segundo doblez de la pluralidad de dobleces será aplicado a la segunda posición antes de que el primer doblez de la pluralidad de dobleces sea aplicado a la primera posición;colocar un extremo de un elemento de arrastre a través d una apertura definida por el ojal de arrastre de modo que el extremo del elemento de arrastre pasa dentro de una cavidad interna definida por el ojal de arrastre;asegurar un elemento de tope sobre el extremo del elemento de arrastre después de que el elemento de arrastre haya pasado a través d la apertura;ojal de arrastre;y basándose en el primer indicio y el segundo indicio, aplicar el primer doblez a la primera posición en la porción de cuerpo del ojal de arrastre, y después de aplicar el primer doblez, aplicar el segundo doblez a la segunda posición en la porción de cuerpo del ojal de arrastre para doblar el ojal de arrastre sobre el conductor.
- 2El método tal y como se describe en la reivindicación 1, en donde la porción del cuerpo del ojal de arrastre está dimensionada para ser doblada solamente por una superfici exterior del conductor.
- 3El método tal y como se describe en la reivindicación 1, en donde el conductor comprende un conductor aislado y en donde la porción del cuerpo del ojal de arrastre s dimensionada para ser doblada sobre un conductor de metal sin revestimiento expuesto mediante el desforrado del aislamiento del conductor aislado.
- 4El método tal y como se describe en la reivindicación 1, en donde el primer doblez y el segundo doblez son girados substancialmente 90 grados entre ellos.
- 5Un método para preparar una cabeza de arrastre qu incluye una pluralidad de ojales de arrastro y una pluralidad d conductores para instalación, el método que comprende:aplicar un primer indicio a una porción de cuerpo de un I I. ·ι>1 ««.«»«! IMPI Instituto mexicano Dt LA tROMEDAD INDUSTRIAL ojal de arrastre en una primera posición en la porción de cuerpo;aplicar un segundo indicio a ia porción de cuerpo del ojal de arrastre en una segunda posición en la porción de cuerpo, I primer indicio y el segundo indicio que indican un orden secuencial para aplicar una pluralidad de dobleces a la porción de cuerpo, en donde el primer indicio indica que un prim r doblez de ia pluralidad de dobleces será aplicado a la primera posición antes de que un segundo doblez de la pluralidad de dobleces sea aplicado a la segunda posición, y en donde el segundo indicio indica que el segundo doblez de la pluralidad de dobleces será aplicado a la segunda posición antes de que el primer doblez de la pluralidad de dobleces sea aplicado a la primera posición;adherir el ojal de arrastre a un elemento de arrastre respectivo;adherir el elemento de arrastre respectivo a un elemento de arrastre adicional para ia instalación;colocar al menos una porción de un conductor respectivo adentro del ojal de arrastre;y basándose en el primer indicio y el segundo indicio, aplicar el primer doblez a la primera posición en la porción de cuerpo del ojal de arrastre, y después de aplicar el primer doblez, aplicar el segundo doblez a la segunda posición en la porción de cuerpo del ojal de arrastr para doblar el ojal de arrastre sobre el conductor respectivo.
- 6El método tal y como se describe en la reivindicación 5, que comprende además desforrar al menos una porción del aislamiento del conductor respectivo para exponer un conductor de metal sin revestimiento respectivo dentro del conductor respectivo.
- 7El método tal y como se describe en la reivindicación 6, en donde el ojal de arrastre es doblado sobre el conductor de metal sin revestimiento.
- 8El método tal y como se describe en la reivindicación 7, en donde el primer doblez y el segundo doblez son girados substancialmente 90 grados entre ellos.
- 9El método tal y como se describe en la reivindicación 5, que comprende además adherir al menos un ojal de arrastre adicional al elemento de arrastre respectivo.
- 10El método tal y como se describe en la reivindicación 5, que comprende además adherir al menos un segundo elemento de arrastre al elemento de arrastre adicional.
- 11El método tal y como se describe en la reivindicación 5, que comprende además extraer la cabeza de arrastre a través de un conducto para instalar la pluralidad de conductores. ΙΜΡΙ63 INSTITUTO MEXICANO • DE LA PROPIEDAD V>a« INDUSTRIAL
Independent claims11
498 paragraphs in 78 sections, as filed
(54) Title: INTEGRATED SYSTEMS FOR WIRE AND CABLE INSTALLATIONS. (54) Title: INTEGRATED SYSTEMS FOR WIRE AND CABLE INSTALLATIONS.
(57) Summary
Trailing grommets are provided with integrated wiring systems suitable for installing conductors or cables. The pull grommets may include body portions that define interior cavities that are dimensioned to engage tightly with the outer portions of the conductors or cables. The body portions are sized to be bent so that they can be deformed on the portions outside of the conductors or cables. The trailing grommets may also include head portions attached to body portions, the head portions defining openings for receiving a force element to install conductors or cables. These openings bring the inner cavities into communication with the outer cavities of the grommets.
(57) Abstract
Pulling eyes are provided with integrated wiring systems suitable for installing conductors or cables. The pulling eyes may inelude body portions that define interior cavities that are sized to snugly engage outside portions of the conductors or cables. The body portions are sized to be deformably crimped onto the outside portions of the conductors or cables. The pulling eyes may also inelude head portions joined to the body portions, with the head portions defining openings for receiving a strength member for installing the conductors or cables. These apertures place the interior cavities in communication with the exteriors of the pulling eyes.
Institute
Mexican Property
Industrial
<img file="MX338239B_D0001.tif" />
PATENT TITLE NO. 338239
Headlines):
Home:
Denomination:
Classification:
Inventor (s):
Number:
MX / a / 2013/009816
SOUTHWIRE COMPANY
One Southwire Drive, Carrollton, Georgia, 30119-4400, USA
INTEGRATED SYSTEMS FOR WIRE AND CABLE INSTALLATIONS.
lnt.CI.8: H02G1 / 08 'and?, Λ. '·
JOHN R. CARLSON; DAVID B. MCCARDEL / DAVID A. COOPER; DAVID MERCIER; PHILIP SASSfc ALLAN W. DANIEL; TIMOTHY M ANDREA
REQUEST
Completed filing dateabout March 2010
Divisional Patent Number: 317334
PRIORITY
<td>Country:</td><td>Date:</td><td>Number:</td>
<td>US</td><td>March 23, 2009</td><td> 61/162,589</td>
<td>US</td><td>λ April 30, 2009</td><td> 61/174,210</td>
<td>US</td><td>June 29, 2009</td><td> 61/221,216</td>
<td>US</td><td>September 23, 2009</td><td> 61/244,919</td>
<td>US</td><td>IS March 2010</td><td> 12/726,992</td>
Validity: Twenty years
Expiration Date: March 22, 2ί) 3β
The reference patent s ^ grants cc *> foundation in the artÍ <adoe, 1 °, jP fraog ^ nV, and th 4b the Law of Industrial Property.
£) and in accordance with article 23 of the Industrial Property Law ', valid for twenty unenforceable years, stupid from the date of the filing of the international application and will be subject to the payment of the tanfa to keep the "tereaphios" alive. . . ',. -. ., ·,, .. ..
Whoever subscribes to this title does so based on the provisions of articles 6 fractions III and 7 bis 2 of the Industrial Property Law (Official Gazette of the Federation (DOF) 06/27/1991, amended on 02 / 08/1994, 10/25/1996, 12/26/1997, 05/17/1999, 01/26/2004, 06/16/2005, 01/25/2006, 06/05/2009 / 06/01 / 2010, 06/18/2010, 06/28/2010, 01/27/2012 and 04/09/2012); articles 1 «, 3rd fraction V subsection a), 4th and 12th fractions I and lll of the Regulations of the Mexican Institute of Industrial Property (DOF 14/12/1999, amended on 07/01/2002, 07/15/19 2004, 07/28/2004 and 09/07/2007); Articles 1, 3, 4, 5, section V, subsection a), 16 sections I and III and 30 of the Organic Statute of the Mexican Institute of Industrial Property (DOF) 12/27/1999, amended on 10/10/2002, 07/29/2004, 08/04/2004 and 09/13/2007); 1, 3 and 5 Clause a) of the Agreement that delegates powers to the Deputy Directors General, Coordinator, Divisional Directors, Holders of the Regional Offices, Divisional Deputy Directors, Departmental Coordinators and other subordinates of the Mexican Institute of Industrial Property. (DOF 12/15/1999, amended on 02/04/2000, 07/29/2004, 08/04/2004 and 09/13/2007).
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Issue Date: April 8, 2016
DIVISIONAL DIRECTOR OF PATENTS
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NAHANNY CANAL REYES
Sand! No. 550. Floor 1. Santa Maris Tepepan Town, Xochíntíico. CP 16020, Mexico City Tei. (55; 53 34 07 00
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MX / 2016/27084
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33823^
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INDUSTRIAL
INTEGRATED SYSTEMS FOR I NSTALAeiQ ^ B '^ P
WIRE AND CABLE
Cross Reference with Related Requests
This application claims the benefit on the
North American Provisional Patent Application Series No.
61 / 162,589 filed on March 23, 2009, entitled "Integrated Systems for Wire and Cable Installations"; North American Provisional Patent Application Series No. 61 / 174,210 filed on April 30, 2009, entitled "Integrated Systems for Wire and Cable Installations"; North American Provisional Patent Application Series No. 61 / 221,216 filed on June 29, 2009, entitled "Integrated Systems for Wire and Cable Installations"; the Provisional Patent Application
North American Series No. 61 / 244,919 filed on September 23, 2009, titled "Parallel-wound and Multiple-Layer Reels on a Single Reel," and North American Utility Patent Application Series No. 12 / 726,992 filed on March 18, 2010, entitled “Integrated Systems Facilitating Wire and Cable Installations, each of which is expressly incorporated in its entirety in this description by reference. This application also incorporates as reference the total contents issued in North American Patent No. 7,557,301, filed as
North American Patent Application Series No. 12 / 017,222 in
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Mexican Institute of Industrial Property
January 21, 2008, and titled “Electric Cahle Manufacturing Method that Has a Reduced Required Force for Installation, as if the contents thereof were literally stated in this description. In addition, this patent application incorporates by reference the following whose contents were established literally in this description: the North American Provisional Patent Application Series No. 60 / 587,584; and North American Provisional Patent Applications Series Nos. 11 / 858,766 and 11 / 675,441.
Brief Description of Drawings
Figure 1 is a combined flow and block diagram illustrating implementations in which cable and wire manufacturers, distributors, and contractors can interact with each other to create integrated delivery systems for wire and cable facilities.
Figure 2 is a block diagram providing additional details related to a configuration and ordering a tool that can facilitate creating and delivering integrated systems for wire and cable installations.
Figure 3 is a flowchart illustrating additional details related to the inputs and outputs of the configuration and tool order shown in Figure 2.
Figure 4 is a block diagram illustrating various components that can be included in the systems.
Integrated IMPI for wire and café installations<sup>R</sup>.<sup>IAL</sup>
MEXICAN INSTITUTE OF THE HOl'IEDAD
<img file="MX338239B_D0009.tif" />
Figure 5 is a diagram illustrating multiple 0 '' iluiubie> <wiring that can be loaded in parallel on a single reel to be delivered in parallel during installation to a contractor job site.
Figure 6 is a diagram illustrating delivery systems that may be included in some cases of integrated systems for wire and cable installations.
Figure 7 is a diagram illustrating an example of a drag eye that can be adhered to the terminal end of the wires or cables provided as part of Integrated systems for wire and cable installations.
Figure 8 is a diagram illustrating additional drag eyelet examples, as well as illustrating Installation scenarios in which a number of different drag eyelets are attached to the terminal ends of the respective cables, connecting the drive belts, and linked to a common point of adhesion to drag them through a conduit.
Figure 9 is a diagram illustrating a spring loaded hook shown in Figure 8, along with a protective cover that can be installed on a drag head to reduce the friction encountered by the drag head when a wire extension or certain cable
IMPI
MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY illustrates a construction
<img file="MX338239B_D0010.tif" />
drag head.
it is dragged through the duct.
Figure 10 is an assembled alternative diagram of an assembly
Fig. 11 is a diagram illustrating a drag eye and a drag cable in greater detail.
Fig. 12 is a diagram illustrating examples of a reel that can be loaded with a plurality of conductors having different colored insulation.
Figure 13 AC is a diagram illustrating the details of an illustrative fold.
Fig. 14 is a diagram illustrating examples of conductors having different colors that are bent in the pull ropes or cables.
Figure 15 is a block diagram illustrating a variable speed tie provided by some implementations of integrated systems for wire and cable installations.
Fig. 16 is a diagram illustrating examples of threaded drag grommets.
Fig. 17 is a diagram illustrating examples of unthreaded drag grommets.
Figures 18A and 18B are diagrams illustrating examples of delivery systems configured for delivery to job sites.
Figure 19 is a diagram illustrating examples
<img file="MX338239B_D0011.tif" />
IMPI
INSTITUTO MEXICANO additional INDUSTRIAL trailing eyelets
Figure 20 is a η diagram<sup>ιιρ</sup> illustrates the drive shafts shown in Figure 19, with head portions and body portions assembled.
Figure 21 is a diagram illustrating drag heads that can include any of the drag grommets shown in Figure 20.
Fig. 22 is a diagram illustrating additional details of the drag eyelets as the drag eyelets pass through the fold.
FIG. 23 is a diagram illustrating suitable outside diameters, inside diameters, and wall thicknesses to implement the trailing eyelets described herein.
FIG. 24 is a diagram illustrating the sequences and / or rotational orientations for making successive bends along the drive buttonholes, as indicated by the color-coded areas along the drive buttonholes.
Fig. 25 AB is a diagram illustrating the sequences and / or rotational orientations for making successive bends along the trailing eyelets, indicated by dashes or other indications applied to the trailing eyelets.
Figure 26 is a diagram illustrating details of preparing a shielded cable for installation of the trailing head assemblies.
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Fig. 27 is a flow chart showing methods for making multi-layer parallels on a single reel, in accordance with embodiments described herein; and
Figures 28 to 31 are diagrams showing aspects of multi-layer parallels on a single reel, in accordance with embodiments described herein.
Detailed description of the invention
The following detailed description focuses on methods, systems, and apparatus for using the integrated systems for wire and cable installations. This description provides various components, one or more of which may be included in particular implementations of integrated systems for wire and cable installations. In illustrating and describing these different components, however, it was noted that the implementation of integrated systems for wire and cable installations can include any combinations of these components, including combinations different from those shown in this description.
Figure 1 illustrates implementations, generally denoted by number 100, in which any number of wire and cable manufacturers 102, wire and cable distributors 104, and contractors 106 may interact with respect to the creation and delivery of integrated systems for wire and cable installations. As shown in
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MEXICAN INSTITUTE UZ THE PROPERTY
INDUSTRIAL
<img file="MX338239B_D0014.tif" />
FIG. 1, a given wire and cable manufacturer 1.02 and a particular contractor 106 can communicate or interact with each other, to establish different parameters related to one or more wire extractions to be performed at the job site where the contractor 106. Figure 1 indicates these interactions generally at point 108.
Interactions 108 may represent Contractor 106 by providing specifications related to wire pulls. Interactions 108 can also represent manufacturer 102 by processing these specifications to design and provide an integrated system that is customized to perform one or more wire extractions at the contractor's site.
Figure 1 generally depicts at points 110A and 110B (collectively, integrated systems 110) the integrated systems for wire and cable installations, as provided by the manufacturer 102. In some implementations, but not necessarily all, the integrated systems 110 may pass through one or more distributors 104 for delivery to contractor 106. Figure 1 indicates at point 110A the integrated systems as provided to distributors 104, and indicates at point 110B the integrated systems as provided by distributors 104 to contractors 106. In scenarios
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Different, distributors 104 may not add or augment integrated systems 110 before delivering them to contractors 106. Therefore, integrated systems 110A may or may not be the same as integrated systems 110B in different deployment scenarios.
In some cases, integrated systems 110 can pass directly from manufacturer 102 to contractor 106. Figure 1 depicts this scenario generally at point
110C.
Figure 2 illustrates additional details, generally marked 200, that relate to a configuration and ordering of tools that can facilitate the creation and delivery of integrated systems for wire and cable installations. For ease of description, but not to limit possible implementations, Figure 2 carries manufacturer 102 and contractor 106, who can interact as they were carried at point
108.
Returning to FIG. 2 in greater detail, manufacturer 102 (or a third party acting on behalf of manufacturer 102) may operate one or more server systems 202, and may enable distributors and / or contractors 106 to register with server systems 202 remotely to access at least portions of server systems 202. Server systems 202 can communicate with the
IMPI
<img file="MX338239B_D0016.tif" />
manufacturer 102, distributors, and / or frontriatistss, .. 10 pair, suitable communication networks (not shown in figure 2). For example, the manufacturer 102 and the contractor 106 can carry out at least a portion of the interactions 108 through the server systems 202.
Going back to server systems 202 in more detail, these systems may include one or more processors 204, which may have a particular type or architecture, selected as appropriate for particular implementations. Processors 204 can connect to one or more selected bus systems 206 for compatibility with processors 204.
Server systems 202 may also include one or more cases of computer-readable storage medium or media 208, which are connected to bus systems 206. Bus systems 206 can enable processors 202 for read code. and / or data for / from computer readable storage media 208. Means 208 may represent appliances in the form of storage elements that are implemented using any suitable technology, including but not limited to semiconductors, magnetic, optical materials, or the like. Media 208 may include memory components, either classified as RAM, ROM, snapshot, or other types, and may also represent disk drives
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MEXICAN INSTITUTE OF INDUSTRIAL PROEILTY? N8 piJñdpn ¡nrlnir ιιπ ^ -αwhen they are loaded and hard.
The storage media plus instruction modules that, executed in processor 204, cause server systems 202 to perform various techniques related to provisioning integrated systems for wire and cable installations. As detailed throughout this description, these instruction modules can also provide various tools or techniques by which server systems 202 can be provided with integrated systems 110, using the components and flows explained in greater detail throughout. the present description. For example, the storage media 208 may include one or more software modules that implement the configuration and ordering of tools or utilities 210. These configurations and tool ordering 210 generally represent software programmed or configured to perform various functions here distributed to systems. Server 202. For example, contractor 106 and / or dealers can access tool configuration and ordering 210, once they have been registered with server systems 202.
By referring to the configuration and ordering of tools 210 in greater detail, these tools can provide suitable graphical user interfaces (Uls) and
1-1
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INSTITUTO MEXICANO DL LA PROPIEDAD INDUSTRIAL related process flows whereby manufacturer 102 may obtain different parameters related to one or more wire / cable removals to be performed at a contractor job site. Figure 2 illustrates several non-limiting examples of such parameters, generally indicated by the number 212.
Returning to parameters 212 in greater detail, these parameters 212 may include a representation of the job or site identifier where scheduled wire / cable removals are scheduled to occur. Figure 2 indicates the identifier of the job or site with the number
212A.
At a given job or site indicated by identifier 212A, one or more different wire / cable extractions or runs can be scheduled and provisioned using configuration and tool order 210. Figure 2 indicates a representative run identifier at point 212B, but it has been observed that tool setup and ordering can provide any number of wire / cable runs for a given job site.
For a given wire / cable run or pull, the configuration and ordering of tools 210 can meet different parameters. For example, figure 2 indicates an extraction length in the
IMPI
INSTITUTO MEXICANO OS LA PROPIEDAD
INDUSTRIAL
<img file="MX338239B_D0019.tif" />
Item 212C, with removal generally comprising the removal of wire or cable throughout an electrical conduit run or comprising the shielded cable run, such as a shielded connecting device ("MC) cable. According to the embodiments, shielded cables include a bundle of wires consisting of individually insulated conductors covered by a shield, or a flexible layer of material, such as metal. Generally, runs involving shielded cables do not require a conduit through which the shielded cables need to be removed since the shield of the shielded cables acts as the conduit. The 212C pull length parameters can be specified in feet, yards, or other appropriate units of measure.
Figure 2 indicates a size and / or configuration of the conduits at point 212D for extractions comprising a conduit. More specifically, the configuration parameters of conduit 212D may represent the diameter of the conduit through which the wire or cable is to be drawn. This conduit size or diameter can be expressed and represented using any suitable nomenclature known to those skilled in the art.
In addition, the duct configuration parameters
212D may indicate a general layout or configuration for a given duct run. For example,
<img file="MX338239B_D0020.tif" />
r.nndnr.tn_21? n configuration parameters can indicate whether the conduit run includes any kinks. For duct runs that include bends, the 212D duct configuration parameters can indicate how many and what types of bends occur, and the like. The configuration parameters of the conduit 212D can indicate whether the conduit run includes any intermediate extractions or junction boxes, and the location of any such boxes. Finally, the configuration parameters of the conduit 212D can indicate whether the conduit itself is constructed of metallic or plastic materials (eg, polyvinyl chloride (PVC)).
Configuration parameters 212 may include parameters representing any individual conductors comprised of a given run, generally indicated at item 212E. The 212E conductor parameters can indicate how many conductors (whether they are individual wires or cables that include multiple wires) are included in a given run, and how many conductors are included within the shield of a shielded cable, as well as the size and type of these conductors . These conductor sizes and types can be expressed and represented using any suitable nomenclature known to those skilled in the art. Configuration parameters 212 can also specify whether a driver
IMPI
The MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY is determined from copper, aluminum, or other conductive material.
Configuration parameters 212 may include parameters representing desired insulation colors for particular conductors, as generally indicated in item 212F. As is understood by those skilled in the art, certain colors selected for a given circuit can carry the corresponding electrical functions. These colors and functions may vary depending on whether the circuit is operating at high voltage or low voltage. For example, in any high-voltage or low-voltage scenario, the green conductors generally function as circuit ground connections. In high voltage scenarios, brown, orange, or yellow leads can indicate “charged” circuit functions, while gray leads can indicate neutral circuits. In low voltage scenarios, the black, red, or blue conductors can indicate “charged” circuit functions, while the white conductors can indicate neutral circuits. In general, these conductor colors can be expressed and represented using any suitable nomenclature and conventions known to those skilled in the art.
In prior techniques, the phase tape can be applied to, for example, black conductors to represent different functions of the circuit. However, apply the phase tape to
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MEXICAN INSTITUTE
PROPERTY __ these different drivers can be labor¡osÓ''V p<sup>TO</sup>I am afraid of mistakes. For example, crossing the phases Üel Power supply for, for example, three-phase equipment can damage this equipment. However, the color-coded conductors provided as part of the integrated system 110 can reduce or eliminate the use of phase tape on individual conductors.
Configuration parameters 212 can indicate whether the wires or cables are to be equipped with drag grommets, as generally depicted in item 212G. These trailing grommets are described in more detail below. In an overhaul, manufacturers 102 or distributors 104 may install, at their facilities, drag grommets at the main end of the wires that are delivered to contractors 106. These drag grommets make it easy to attach drag cords to the ends of the wires, for dragging into and through the conduit. Because the drag grommets are fixed at the factory prior to delivery to contractors 106, personnel associated with contractors 106 are relieved of the labor and time involved in configuring the wire ends for extractions. For example, using the above techniques, contractor personnel can create a drag head by stripping some length of insulation from the end of a wire, thereby exposing the bare metal conductor or conductors. At
IMPI
INSTITUTO MEXICANO E> £ THE INDUSTRIAL PROPERTY In the case where the wire is a conductor with several strands, at least some of the outer strands can be unwound and dragged again, and the inner strands cut. At the same time, the outer threads can be adhered to, or twisted around a drag rope in some convenient way to form a drag head. The entire connection can be wound with adhesive tape (eg duct tape or electrical tape) in addition to ensure the connection between the pull rope and the wire.
In these prior techniques for creating the drag heads, however, the drag stress is carried only by a subset of conductor wires, i.e., the wires that are not cut when the drag heads are created. Because only a subset of conductor strands carry the drag stress, the maximum drag stress that a given drag head can withstand before failure can be reduced. However, as described in more detail below, the trailing eyelets are attached to all conductors that have strands, so that trailing stress is transferred to all conductors with strands rather than just a subset of the stranded conductors. themselves. Accordingly, implementations of integrated systems 110 incorporating the drag grommets can achieve higher maximum drag stresses. In addition, the trailing heads that incorporate the grommets
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drag can be shorter in length and more flexible than. conventional drag heads, and therefore can travel through the folds in the duct runs more easily without wear or bonding.
Generally, extractions through the ducts can experience bends that have any angle up to or possibly more than about 90 °. The drive grommets described here can be of any length suitable for clearing such kinks without binding or binding during extractions.
Using the drag grommets attached to the ends of the wires, the drag rope can be attached to the wires, while reducing the labor time and cost associated with the above techniques to form the drag head. In general, the configuration parameters
212F associated with a given wire or conductor may indicate whether that particular wire or conductor is to be equipped with a drag eye. For example, for a shielded cable run, all of the conductors that make up the shielded cable may be equipped with a drag eyelet, or a portion of the conductors that make up the shielded cable may be equipped with a drag eyelet while the remaining conductors they are not equipped with a drag eye. In cases where multiple types of drag grommets are
I available, 212F configuration parameters can
<img file="MX338239B_D0026.tif" />
identify which type of drag eyelet is to be attached to a
-l - '' “· - - determined wire or conductor.
Parameters 212 can also include the size / configuration parameters of shield 212H for runs that comprise shielded cables, such as the MC cable. The size / configuration parameters of the 212H shield can indicate the size of the shield to be associated with the shielded cable as well as the type of shield material itself to be constructed of, such as metal. As is known to those skilled in the art, the size of the shield that will be associated with the shielded cable can be determined based on the number and size of conductors that are to be included within the shield as provided by conductor parameters 212E. The size of the shield can be expressed and represented using any suitable nomenclature known to those skilled in the art. In addition, the 212H shield size / configuration parameter can indicate the overall distribution or configuration of a given shielded cable run.
Figure 3 illustrates the additional details, generally indicated by the number 300, related to the inputs and outputs of the tool setup and order 210 shown in Figure 2. For example, manufacturer 102 may receive a particular order 302 for a contractor. determined 106, with this order 302 specify one or more of zacutx .- ^ '
<img file="MX338239B_D0027.tif" />
the different configuration parameters 212 shown in FIG. 2. At the same time, the configuration and ordering of tools 210 can process these configuration parameters 212, and calculate the expected extraction voltages 304 for the different extractions or runs included in the order 302. For example, the configuration and ordering of tools 210 may consider the size and configuration of the conduit or shielded cable comprised in a given run, the length of the run, the size and type of different conductors, and other important factors when computing the Extraction tension expected for said determined run.
Tool setup and arrangement 210 may also comprise the proper extraction equipment for a given run, based at least in part on the draw tension 304 calculated for the given run. Examples of towing equipment may include tie rods, which generally have maximum rated towing capacities. In an example scenario, if pull tension 304 is calculated as a maximum of 2,000 pounds (907.18 kg), tool setup and ordering 210 may recommend equipment capable of generating at most 2,000 pounds (907.18 kg) of force. In this example, provide equipment capable of generating any force greater than 2,000 pounds (907.18 kg)
MEXICAN INSTITUTE
OF THE CV PROPERTY »
INDUSTRIAL would be an unnecessary expense. Figure 3 indicates-at point 306 a representation of the recommended towing equipment for a given extraction. If a particular order 302 includes different multiple pulls with different calculated tensions 304, recommendations 306 may suggest a tie rod that has sufficient capacity to handle the larger calculated tension 304.
Figure 4 illustrates various components, generally indicated by the number 400, that can be included in integrated systems 110 for wire and cable installations. In illustrating and describing these example components, it should be noted that the implementations of this description may include at least one of these components, but may not necessarily include all of these components.
Integrated system 110 may include any number of insulated conductors, generally represented by 402. These conductors can be configured in any number of different ways, to reduce the force involved with installing the insulated conductors through the conduits. For example, conductor insulation can be pre-lubricated during manufacturing, as distinguished by having lubricant applied to conductors when preparing for job site extraction. The different patents issued, provisional applications, and non-provisional patent applications here
<img file="MX338239B_D0028.tif" />
MEXICAN PROPERTY INSTITUTE incorporated as reference above 'j ^ S ^ rcioñán several non-limiting examples of previously lubricated' isolated conducluitTS 402. However, it has been observed that the implementations of this description may include other examples of previously lubricated isolated conductors 402 without departing from the scope and spirit of the present description.
Embedded systems 110 may include any number of color-coded conductors, generally represented at point 404. For example, recalling the above description of FIG. 2, configuration and ordering of tools 210 may enable contractor 106 to specify colors. 212F driver for a specific order. As explained above, different colors of conductors can carry particular electrical functions, as understood by those skilled in the art.
In additional embodiments, integrated systems 110 may include shielded cables, generally represented by 405. As explained above, the shielded cable may include a number of conductors covered by a shield, such as metal.
The conductors 402 provided by a particular implementation of the integrated system 110, whether these conductors are previously lubricated and / or
IMPI
MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY
<img file="MX338239B_D0029.tif" />
Color-coded, they can be delivered so that multiple different conductors are provided to deliver on a single, determined reel, usually indicated with the number 406. For example, if a particular order specifies three different conductors that have three different colors of insulation, covering the integrated system 110 this order can supply these three different conductors on the same reel. Accordingly, the integrated system 110 can enable all three conductors to be delivered to or supplied from the same reel in parallel with each other.
In addition, conductors that were loaded onto the same reel can be cut to length, remembering, for example, that the length of an electrical conductor can be specified for a given run of conduits (eg, point 212C of Figure 2 ). For example, manufacturer-operated service centers can load and supply these reels as a service to contractors.
In some implementation scenarios, the reels can be compartmentalized, so that they contain different colors of conductors in respective compartments. In other deployment scenarios, the reels may include a single compartment containing all of the different conductor colors.
In contrast, the above techniques can fill this
IMPI; · <1 IfUTO MEXICANO L't THE PROPERTY
INDUSTRIAL
<img file="MX338239B_D0030.tif" />
order determined by delivering three different reels, each of which would contain one of the different drivers. In these prior techniques, the three different conductors would be supplied simultaneously from the three different reels, further complicating the installation of the conductors. The following drawings illustrate and provide additional detail related to these single reel scenarios.
Integrated systems 110 as delivered to a particular contractor 106 can be delivered with a consolidated delivery system, as generally indicated in item 408. Generally, using the above techniques, spools containing conductors would be installed in the apparatus configured in a ad hoc basis on the job site. However, these delivered reels can be quite heavy and difficult to handle in position, with the present risk of deformation and injury to workers. However, the delivered consolidated system 408, as illustrated in more detail below, can expedite and facilitate the preparation of the delivered reels, and can reduce or eliminate manual positioning and leveling of these delivered reels. For example, forklifts and other machinery can maneuver the consolidated delivery systems 408 as a single unit in position. Once the 408 delivery system is in place, the
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<img file="MX338239B_D0031.tif" />
workers can adjust the opmni ^ Hr system.
to deliver the conductors within the conduit.
Embedded systems 110 may also include supplied armored wires, conductors, or cables that have drag grommets installed at their ends. Figure 4 indicates these drag grommets generally at point 410, and the subsequent drawings provide additional details related to the drag grommets.
Integrated systems 110 may also deliver delivered specialized drag mantles, generally indicated by the number 412. For example, these drag cords may be coated or impregnated with specialized low-friction compounds, similar to compounds that impregnate previously lubricated insulated conductors. 402. In prior techniques for dragging conductors through the conduit, the contact between the string and the conduit can contribute considerable friction to the overall pull, thereby increasing the pull tension. However, by reducing the friction between the pull rope and the conduit that surrounds it, integrated systems 110 can reduce the overall stress involved in a given pull. In addition, high friction or abrasion rope can damage conduits constructed of polyvinyl chloride (PVC), resulting in burrs, nicks, and debris left in the conduit. At the same time, this damage to the
IMPI
MEXICAN INSTITUTE OF PROPERTY
INDUSTRIAL
<img file="MX338239B_D0032.tif" />
Conduit structure can damage conductor s, and such insulation when wires are pulled into the conduit. However, specialized traction rope 412 can be constructed of nylon, and impregnated with a low friction compound.
A variable speed tie rod 414 can also be provided as part of integrated systems 110. Variable speed tie rod 414 may include a drum to which draw rope 412 is attached. In some implementations, the variable speed tie rod 414 can be an electric motor that can be controlled by a two speed switch or a variable speed switch. This electric motor can be adapted with an output shaft connected to a 90 ° output mandrel, the output mandrel being coupled to operate the tie rod drum 414.
Integrated systems 110 may also include one or more protective covers 416 made of a low friction material (eg, NYLON, PVC, or any polymeric materials), these covers 416 being adapted for placement around a drag head prior to start a certain drag. More specifically, these covers 416 can reconcile any equipment included as part of the drag head that could contribute to increased friction, thereby reducing the risk that this equipment may contact the conduit through which the conductors are drawn. Just like<sup>i <! |</sup>S<sup>:</sup>and<sup>TO THE</sup> Described above with respect to the protective cover 416 may, along with other factors, contribute to reducing the drawing head force through the conduits during a given extraction. For example, the protective covers 416 may be pre-lubricated during manufacturing and / or have a lubricant applied to the covers when preparing for job site extraction.
Figure 5 illustrates multiple conductors 402 loaded in parallel on a single reel 406 to be delivered in parallel during installation at a contractor job site. For ease of reference, but not to limit possible implementations, Figure 5 provides three examples of these conductors, respectively marked 402A, 402B, and 402N. However, the implementation of the present disclosure may include any number of conductors 402 delivered on a single reel 406. In a further embodiment, multiple parallels, each consisting of one or more conductors 402, may be wound on reel 406 in layers, on top of each other, as will be described later with respect to Figures 27 to 31. Each parallel on reel 406 can then be delivered separately for separate and multiple independent wire / cable pulls.
<img file="MX338239B_D0033.tif" />
IMPI <sup>, nst</sup>™ tomex.cano
OF THE INDUSTRIAL PROPERTY
<img file="MX338239B_D0034.tif" />
In example implementation scenarios, 402 leads can be of any convenient size or type. In different possible implementations, different conductors 402A to 402N may or may not be the same type or size. For example, conductors 402 serving as circuit neutrals may be dimensioned smaller, relative to conductors 402 serving as higher voltage supplies.
Conductors 402 may include insulation from I 502A to 502N (collectively, insulation 502) of any suitable thickness, composition, or type. Furthermore, the insulation 502 can be color coded as described above in relation to the color coded leads 404 of Figure 4. In some scenarios, the insulation 502 can also be marked with the length in feet by means of markers, to identify the amount of wire that has been delivered from spool 406 at any given time.
Also as described above, the insulation 502 may be impregnated or coated with a suitable lubricant as part of the manufacturing process of the insulation 502, as distinguished from prior art in which the lubricant is applied to the exterior of the insulation 502 just prior to conductors 402 are being drawn through the conduit.
<img file="MX338239B_D0035.tif" />
MEXICAN INSTITUTE
OF INDUSTRIAL PROPERTY
As shown in Figure 5, a portion of the insulation 502 has been stripped from the end of the conductors 402, exposing the bare metal cables or wires 504A to 504N (collectively, wires 504) from the bottom. Wires 504 can be of any convenient type or size, and can represent solid wires or striated cables, as appropriate in different installations. In addition, wires 504 can be constructed of any suitable conductive material, including, but not limited to, copper and aluminum.
Figure 6 illustrates additional details, generally indicated by 600, of delivery systems that may be included in some cases of integrated systems 110 for wire and cable installations. For reasons of convenience for the description, but not to limit possible implementations, Figure 6 can be understood as additionally working in the delivery system 408 as shown above and described in Figure 4. In addition, Figure 6 carries the representative reel 406, from which any number of different conductors 402A to 402N can be delivered in parallel with each other.
Returning to 408 delivery systems in greater detail, these 408 systems may include a 602 base platform of sufficient size and weight to provide
IMPI
MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY
<img file="MX338239B_D0036.tif" />
stability for general 408 systems during — e4 shipping, administration, and installation on a construction job site. Base platform 602 is generally horizontal in configuration and may include two or more separate slots 610 or channels in the base, so that delivery system 408 can be lifted and carried as a single unit by a standard forklift. Delivery systems 408 may also include vertical supports 604A and 604B (collectively, vertical supports 604). Uprights 604 can rotatably support the ends of reel 406, allowing reel 406 to rotate while delivering conductors 402. Reel 406 may also include flanges 606A and 606B (collectively, flanges 606) to direct conductors. 402 away from vertical supports 604.
Delivery systems 408 may also include leveling mechanisms 608A and 608B (collectively, leveling mechanisms 608), respectively attached to vertical supports 604A and 604B. More specifically, the leveling mechanism 608A is placed between the platform 602 and the vertical support 604A, while the leveling mechanism 608B is placed between the platform 602 and the vertical supports 604B. In general, leveling mechanisms 608 can operate to level reel 406. For example, assuming platform 602
MEXICAN INSTITUTE r> E THE PROPERTY
INDUSTRIAL.- is adjusted above the ground that is not uniform, the leveling mechanisms 608 can adjust the orientation of the vertical supports 604 in relation to the platform 602, at the level of the reel 406. The leveling mechanisms 608 can operate by any suitable means, including but not limited to mechanical, hydraulic, pneumatic, or the like means.
Figure 7 illustrates the example drive grommets, generally denoted 700, which may be attached to the terminal ends of conductors 402 provided as part of integrated systems 110 for wire and cable installations. For ease of reference, but not to limit possible implementations, Figure 7 carries an example conductor 402, with a portion of the insulation 502 detached to expose the uncoated wire or cable 504. It should be understood by those skilled in the art that conductor 402 may be enclosed within a shield of a shielded cable.
The trailing eye 700 may generally include a somewhat elongated body portion 702, which defines an interior cavity 704 along at least in part of the body portion 702. At the same time, the uncoated cable or wire 504 may be inserted into cavity 704, and body portion 702 may be bent, stamped, or otherwise secured to the wire. In scenarios in which the portion of the
<img file="MX338239B_D0037.tif" />
Body 702 is bent on wire 504, the body portion 702 (more specificTent, <= the thickness of the wall) can be selected as appropriate to provide a solid bend. More specifically, the kink resistance may be sufficient to withstand the stress conductor 402 is expected to encounter while being pulled into the conduit.
In other implementation scenarios, the drive grommets 700 may include a wedge mechanism, adjusting screws, or other mechanical mechanisms that operate to secure body portion 702 to the exposed cable or wire 504.
In implementations in which the trailing eyelets 700 are bent over the ends of the conductors 402, the trailing eyelets 700 may be manufactured from a material suitable for bending (eg, aluminum, or alloys thereof). In general, trailing grommets 700 can be manufactured using any suitable processes, including but not limited to, machining a single piece of warehouse aluminum or other material, as well as forging, casting, molding, or the like. In addition, the drag eye 700 can define an opening 706 through which a drag rope can be secured, as will be described later with respect to FIG. 8.
Compared to the previous methods, in which the
IMPI
MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY
<img file="MX338239B_D0038.tif" />
trailing heads are created for electrical conduit runs or shielded cable runs on an ac7 hoc base on the job site, 700 trailing grommets as installed by manufacturers can provide a more standardized and reliable connection for conductors . Furthermore, engineering techniques and quality control processes at the manufacturer's site may overcome the variability and deviations generally experienced with ad hoc installations done on the job site by personnel skilled in the art differently. In some cases, manufacturers may issue specifications that indicate the maximum voltage ratings applicable to individual installations of drive lugs 700 to 402 conductors.
In some scenarios, the trailing grommets 700 may duplicate according to the equipment that is suitable for the electrical coupling of conductors 402 for the switchgear or termination equipment. For example, one end 708 of the trailing eyelets 700 that is opposite the end where the conductor 402 enters may be flattened or otherwise adapted to be screwed into a seat or other adhesion mechanism provided by the dispensing device or termination equipment. In this way, the grommets 700 configured in this way can save the labor time to prepare the
<img file="MX338239B_D0039.tif" />
MEXICAN INSTITUTE OF PROPERTY
INDUSTRIAL
<img file="MX338239B_D0040.tif" />
402 conductors for connection to distribution devices or termination equipment.
Figure 8 illustrates additional examples, generally marked 800, of drag grommets 700A, 700B, and 700C, as respectively attached to the terminal ends of conductors 402A, 402B, and 402C. In additional embodiments, conductors 402A, 402B, and 402C may be enclosed within a shield of a shielded cable. The trailing eyelets 700 are respectively connected to the trailing cords 802A, 802B, and 802C (collectively, the trailing ropes 802). More specifically, connecting rings, carabinieri, or forks 804A, 804B, and 804C (collectively, connecting rings 804) can pass through the openings 706 shown in Figure 7, and connect the drag grommets 700 to the cords. trailed 802. However, some implementations of this description may omit connecting rings 804, in favor of passing one end of drag rope 802 through the opening in drag eye 700 and securing the end of the pull rope back. about herself. The end of the pull rope 802 may be stamped, bent, or otherwise adhered to the main body of the pull rope, forming a circle that secures or captures the pull eye 700. As shown in Figure 8, the 802 drag ropes can be linked
<img file="MX338239B_D0041.tif" />
MEXICAN INSTITUTE Dt THE PROPERTY
INDUSTRIAL
<img file="MX338239B_D0042.tif" />
to a common hook fastener 806 for the arraAtm through the conduit.
In the examples shown in Figure 8, the different drag ropes 802 have different lengths. These different lengths effectively stagger the different drive grommets 700A, 700B, and 700C within the conduit, thereby reducing the risk that the trawl eyelets 700 may become caught within the conduit. In contrast, if they were three 802 drag ropes of the same length, the three drag eyelets 700 could be stacked on top of each other, and if the conduit is small enough in diameter, these three stacked eyelets 700A, 700B, and 700C can jam when pulled through the conduit. With respect to shielded cables, the staggering of the different drag grommets 700 allows the overall diameter of the shielded cables with the drag grommets attached to the included conduits to be smaller than if different drag grommets were stacked on top of each other .
Returning to drag ropes 802 in greater detail, as described above, these drag ropes 802 may be coated or impregnated with a low friction compound to reduce friction and drag force within the conduit during extraction. This low friction compound may or may not be similar to the lubricant used to pre-lubricate insulated conductors,
IMPI
MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY
<img file="MX338239B_D0043.tif" />
as previously described in FIG. 4 at block 402. In this way, drag cords 802 can reduce drag tension during a given run.
Drag ropes 802 can be constructed of metallic or non-metallic materials.
FIG. 9 illustrates a spring loaded hook 806 and the hauled cords 802A, 802B, and 802C of FIG. 8. A trailing head 902 may include different types of mechanisms 806 (eg, including but not limited to the hook example. with spring shown in Figure 9) to adhere the drag ropes 802. Other examples of adhesion mechanisms 806 may include the different drive lugs and cleats illustrated and described herein, suitable for adhering drive cords 802 to one another to draw wires or cables through the conduit. Figure 9 illustrates a protective cover 904 that can be installed on the drag head 902 to reduce the friction encountered by the drag head 902 when a particular run of wire or cable is drawn through the conduit. Protective cover 904 can define a partition or opening 906 through which at least a portion of spring hook 806 can pass. In example implementations, the protective cover 904 can be constructed of a suitable polymeric material. Protective cover 904 can also help reduce "RT" force
<img file="MX338239B_D0044.tif" />
comprised of the direction of the drag head 902 through the conduit.
In some implementations, the protective cover 904 may include collapsible tubing applied over the drag head 902, which can be constructed using any of the techniques provided herein. The collapsible pipe can provide a low friction liner or cover over at least a portion of the drag head 902. In some cases, shrink tubing can shrink when heated with an external source, which we refer to as "hot" shrinkage. In other cases, the pipe that can shrink without heating, and therefore characterized as "cold" that can shrink. This “cold” shrink tubing can allow installation personnel to apply shrink tubing to trailing head 902 without using torches or heating sources, which can simplify field withdrawals. Examples of shrink tubing, whether characterized as "cold" or otherwise, are commercially available from a variety of suppliers.
Figure 10 illustrates alternative constructions of the assembled drag head assemblies, generally indicated by the number 1000. Figure 10 shows examples of insulated conductors, respectively marked
MEXICAN INSTITUTE OF PROPERTY
INDUSTRIAL
<img file="MX338239B_D0045.tif" />
with the numbers 402A, 402B, 402C, and 402N. However, it has been observed that implementations of this disclosure may include drag head assemblies incorporating any convenient number of individual insulated conductors 402. In additional embodiments, wires 402A, 402B, 402C, and 402N may be included within a shield of a shielded cable.
Returning to drag head assemblies 1000 in greater detail, the respective drag grommets 1002A to 1002N (collectively, drag grommets 1002) are shown attached to the corresponding insulated conductors 402A to 402N. It will be seen that the trailing eyelets 1002 as shown in Figure 10 provide alternatives to the trailing eyelets 700 shown in Figures 7 and 8. The drag grommets 1002 are shown in greater detail in Figure 11 and are further explained below. However, in a general view, the pull grommets 1002 serve to adhere the insulated conductors 402 to the respective pull cables from 1004A to 1004N (collectively, the pull cables 1004). Drag cables 1004 can be constructed of any suitable metallic or non-metallic material, and can be coated or impregnated with friction reducing compounds, as explained in greater detail above. Without limiting possible implementations, 1004 trailing cables also
IMPI can represent drag ropes, elertí'iWóMtjítfl ^ gf industrial
<img file="MX338239B_D0046.tif" />
Similar.
The individual tow cables 1004 may include ties, which are collectively referred to in No. 1006, which may be formed by means of suitable bends, stamping, or other means of adhesion (collectively indicated in No. 1008). At the same time, any number of trailing cables 1004 can be connected to a fork 1010. The forks 1010 can facilitate the adhesion of the trailing cables 1004 to the trailing rope 412. The tow rope 412 may include a loop 1012 which facilitates adhesion to the fork 1010. The fork 1010 may be constructed of any suitable metallic or non-metallic material, selected as appropriate for the anticipated loads to be supported by the fork 1010 during extractions of the completed head assembly through the duct. In addition, fork implementations 1010 can be sized and shaped differently in accordance with the examples shown in Figure 10, and without departing from the scope and spirit of the present disclosure.
In different possible implementations, a given drag cable 1004 may be attached to one or two of the drag eyelets 1002. For example, the drag cables 1004C and 1004N may be the same drag cable, with a
<img file="MX338239B_D0047.tif" />
end attached to drag eyelet 1002C and the other end attached to drag eye 1002N. Fig. 8 described "above, illustrates examples in which the drag ropes from 802A to 802C are adhered to the respective single drag eyelets from 700A to 700C. However, the examples shown in FIG. 10 can reduce the number of loops 1006 that pass through yoke 1010, by adhering two drag eyelets 1002 to a given drag cable 1004. Finally, the fork 1010 can be attached to a loop 1012 formed within the pull rope 412 (carried for convenience from Figure 4).
Figure 11 illustrates in greater detail the trailing eyelets 1002 and the trailing cables 1004. More specifically, Figure 11 illustrates how the trailing cables 1004 can pass through an opening 1102 defined by the trailing eyelet. 1002, with an element 1104 bent or otherwise adhered to one end 1106 of the pull cable 1004. As shown in Figure 11, the pull eye 1002 can define an inner cylindrical cavity 1108. After element 1104 is bent over drag cable 1004, drag eye 1002 can be slid over element 1104 until element 1104 contacts an inner front portion 1110 of drag eye 1002.
In the examples shown in Figure 11, the element
IMPI
MEXICAN INSTITUTE OF PROPERTY
INDUSTRIAL
<img file="MX338239B_D0048.tif" />
1104 may include an enlarged ball-shaped portion 1112 having an overall dimension larger than opening 1102, sufficient to retain element 1104 within cylindrical cavity 1108. However, it has been observed that the shape and dimensions of element 1104 and Cylindrical cavity 1108 may vary in different implementations of the present description. Accordingly, it is recognized that the examples shown in Figure 11 are provided only to facilitate the present description, and that other mechanisms for retaining element 1104 within cylindrical cavity 1108 may be suitable in different implementation environments.
Although not shown in Figure 11, a portion of insulated conductors 402 may be stripped to expose some of the length of the bare metal wire or cable (eg, 504A to 504N as shown in Figure 5) within of insulated conductors 402. In turn, the exposed or stripped length of the bare metal wire passes into cylindrical cavity 1108. The drag eyelet 1102 can then be bent or otherwise adhered to the bare metal wire 504. In this way, the pull cables 1004 can be securely attached to the bare metal cables or wires 504, using the grommets 1102.
Figure 12 illustrates examples, generally indicated by
<img file="MX338239B_D0049.tif" />
IMPI ·· 5. '' I'i fí) \ h: <í¿ano!. Ío HíohiF.DaD the number 1200, of a carret (for example, éH '«406 previous description) that is loaded with a plurality of. conductors (for example, 402A to 402D) that have different colored insulation. In the example shown, the phase conductors from 402A to 402C may have brown, orange, and yellow insulation, meaning the different phases in a given three-phase installation. Also, a 402D ground conductor may have green insulation, or it may have other suitable color insulation to indicate ground. In general, the colors of the particular conductors comprised in a given extraction can be specified by applied electrical codes, local uses or conventions, or other factors. Accordingly, the examples presented herein are intended to be illustrative, but do not limit the possible implementations of the present disclosure.
In the examples shown in Figure 12, the individual brown, orange, yellow, and green conductors are wound on a single reel. At the same time, this single reel can be delivered to a given job site, and all four drivers can be removed from the single reel. At the job site, installation personnel can remove all four conductors from the single reel. In contrast, prior techniques may comprise delivering four different reels to the job site, each containing the
MEXICAN INSTITUTE OF PROPERTY
INDUSTRIAL
<img file="MX338239B_D0050.tif" />
four reels a different colored conductor. At the job site, installation personnel will pull a single conductor simultaneously from the four different reels. However, it should be understood that from this description, this extraction of a single reel is more convenient than the extraction of four different reels simultaneously.
In some implementations, reels 406 can be loaded with multiple conductors in one facility, where the conductors themselves are manufactured. In other implementations, a warehouse or distribution facility may load multiple conductors on single reels. In general, multiple different colored conductors can be loaded in combination onto the single reels before delivering the single reels to the job sites, thereby relieving the job site personnel from removing multiple reels simultaneously.
Also as shown in Figure 12, trailing eyelets 1204A to 1204D (collectively, trailing eyelets 1204) may be attached to the ends of conductors of different colors from 402A to 402D and further attached to trailing cords or cables. Suitable from 1202A to 1202D. In general, trailing grommets 1204 secure suitable trailing ropes or cables from 1202A to 1202D to the ends of conductors 402. As described
<img file="MX338239B_D0051.tif" />
above, the ends of each conductor — £ 4 -2 — puodon eor stripped as appropriate to expose bare metal wires or cables, with the grommets 1204 bent or otherwise secured directly onto the wire.
Figures 13A through 13C illustrate aspects of bending drive lugs 1204 to conductors 402. More specifically, Figure 13A shows drive lugs 1204 before the compression sleeve has been bent. Drive eyelet 1204 may include areas 1302, depicted with a darker shade in Figure 13, indicating where the compression sleeve may be bent. In implementations of this disclosure, areas 1302 may be painted, grooved, or otherwise visually distinguished from the rest of drag eye 1204. Areas 1402 may direct personnel where to align dies or other bending tools when the sleeve is compressed. .
Figure 13B illustrates three successive bends with the numbers 1304A, 1304B, and 1304C (collectively, bends 1304). Any suitable bending tool, appropriate in different implementations, can form folds 1304 in a compression sleeve provided by drive eyelet 1204. Comparing folds 1304A and 1304C with folds 1304B, it is noted that the implementations of the present disclosure can rotate adjacent folds
<img file="MX338239B_D0052.tif" />
1304 in relation to each other by approximately 90 °. Turning bends 1304 in this manner can promote safer overall adhesion between drive lugs 1204 and uncoated cable or wire 402. Figure 13C shows an example of successive bends 1304 in approximately the same alignment. rotation. It can be seen that the implementations of the present disclosure may employ any number of bends along the compression sleeve of the pull eyelets 1204, for example, the three bends bent here only for purposes of illustration.
The sleeves provided by the grommets 1204 can be compressed using the appropriate dies. In some implementations, multiple bends can be formed simultaneously with multiple dice. In other implementations, multiple bends can be sequenced with a single die. The examples above can apply to either multiple bends that share a similar rotation alignment, or multiple bends that are rotated relative to each other. As further illustrated in Figures 13B and 13C, drive grommets 1204 may carry indicia or markings indicating a die number used to create the folds. Labels "123" shown in Figures 13B and 13C provide examples of such die marks.
IMPI
MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY
<img file="MX338239B_D0053.tif" />
Figure 14 illustrates the four different colored conductors from 402A to 402D that are bent into the pull cords or cables from 1202A to 1202D, carried from the figure.
12. Figure 14 also carries the drag eyelets from 1204A to 1204D, which hold the drag cables from the
1202A to 1202D over the ends of conductors 402A to 402D.
In the example shown in Figure 14, conductor 402A can represent a ground conductor and conductors 402B through 402D can represent current carrying phase conductors. The 402A ground conductor may be smaller in gauge or size than the three current carrying phase conductors from 402B to 402D. However, problems can arise when a full bundle of conductors 402A through 402D are pulled through a conduit, if a smaller 4O2A ground conductor is carrying a disproportionate share of the drag voltage compared to the other conductors Largest phase from 402B to 402D. However, this description provides several methods to reduce the risk that a smaller 402A ground conductor can be damaged by excessive pull voltage.
The upper portion of Figure 14 provides an expanded view of the pull lug 1204A that adheres the smallest ground conductor 402A to the pull cable 1202A. How
IMPIr, „shown, one end of a spring or other elemeW? Ü<sup>TK</sup>he
1402 You can hook an enlarged portion to a stop ....... 1-4-04 which is secured over the end of the 1202A trailing cable. When drag eye 1204A is slid over stop 1404 and spring 1402, an opposite end of spring 1402 engages the front interior of drag eye 1204A.
Once the trailing eyelet 1204A is secured to the end of the smaller ground conductor 402A, the spring 1402 can serve as a damping element between the trailing cable 1202A and the smaller ground conductor 402A. When the smaller 402A ground conductor is pulled through a conduit, along with the other larger conductors 402B through 402D, spring 1402 can dampen any excessive stress experienced by the smaller 402A ground conductor during removal, protecting thus to the smallest ground conductor
402A from damage resulting from excessive stress.
Referring to the lower portion of Figure 14, the present disclosure provides other methods to reduce the risk that the smaller ground conductor 402A may experience damage from excessive stress during extractions. Drivers from 402A to 402D
<img file="MX338239B_D0054.tif" />
can be placed relative to each other on a trailing head, so that some of the trailing cables of the
1202A to 1202D are relatively loose or loose, while <?
IMPIOS
MEXICAN INSTITUTE OF PROPERTY V
INDUSTRIAL that at least one of these tow cables from 1202A to 1202D is tight. In the example shown in Figure 14, the tow cable 1202B is tight, while the tow cables 1202A, 1202C, and 1202D are loose. Accordingly, the tight pull cable 1202B would initially experience the volume of the pull tension, while the looser pull cables 1202A, 1202C, and 1202D would experience less pull tension. The voltage would eventually spread across all conductors during the extraction process. The smallest ground conductor 402A is shown secured to one of the loose 1202A tow cables. Generally, the 402A ground conductor is smaller and smaller in size relative to current carrying conductors. Accordingly, maintaining some degree of slack in the pull rope 1202A as shown in Figure 14 can reduce the pull deformation carried by the ground conductor.
402A.
In other methods, the ends of conductors 402A through 402D can be aligned relative to each other to reduce the risk that a smaller 402A ground conductor may experience damage from excessive stress during pullouts. As shown in Figure 16, the ends of the conductors 402D and 402C can be separated by the distance "L", and the ends of the
ÍJVf pi k <sup>ST</sup>ok ° P<sup>M</sup>¿^ O
INDUSTlII, conductors 402C and 402B are also separated p <approximately that distance "L". However, the ^ drenTcTs of the largest conductor 402B and the smallest ground conductor 402A can be separated by a distance smaller or greater than the distance "L". Figure 14 provides an example in which the distance between the ends of the largest conductor 402B and the smallest ground conductor 402A is separated by approximately half the distance "L". However, other implementations may be for the ends of these two conductors for approximately twice the distance “L.
Figure 14 also illustrates additional examples of a yoke, generally indicated by 1406. As shown, yoke 1406 may include rounded portions mounted within the ends of the yoke, to receive and engage the loops formed by the tow cables 1202 and the tow rope 412 (carried from Figure 4). In some implementations of the present disclosure, fork 1406 may include two or more different segments that rotate or follow relative to each other. Therefore, fork 1406 can be characterized as a "pivot" or "swing" fork. For example, during a given extraction, the tow cables 1202 and / or the tow rope 412 may rotate axially, experiencing forces as the extraction proceeds. However, 1406 swivel forks can
<img file="MX338239B_D0055.tif" />
<img file="MX338239B_D0056.tif" />
THE MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY serves to isolate the tow cables 1202 and the tow rope 412 between them, allowing, for example, the tow cables to rotate axially relative to the tow rope 412, without also exposing the drag 412 to those same rocking forces.
Figure 15 illustrates aspects of a variable speed tie 1502 that may be provided by some implementations of integrated systems for wire and cable installations. Figure 15 also carries a representative cable drag head at point 902, although the drag heads shown in any of the figures of the present description may also be suitable for operation of the variable speed tie rod.
1502.
Returning to variable speed tie 1502 in greater detail, variable speed tie 1502 may include a circuitry or software adapted to sense resistance to a pullout in progress, generally represented by a vector 1504. This resistance may be attributable to the friction and other forces within the conduit between the conductors being pulled, the trailing heads, and / or the trailing cords involved. Other factors that may contribute to this strength include elastic bending governed by the stiffness of the bending provided to Young's modulus, inelastic bending.
IΜ ΡI ííb'TlWTO MEXICAN L'E THE PROPERTY • irXUSTlUAl governed by the effort of performance, the deformity of the surface governed by the hardness and resistance to scratches. Young's modulus, performance stress, hardness, and scratch resistance are physical properties that can each be affected by the composition of the cable jacket, including the amount of lubricant. Extraction force during installation can also include variable timing, and oscillating components. This oscillating component occurs when there are loose portions of the cable and is affected, for example, by the difference between the static coefficient of friction and the kinetic coefficient of friction. The oscillating component can also originate when the cables are jammed while being pulled through angles, as is typical during installation. Cable jamming originates specifically when cables exist in the shape of the cable cross section during bending. In fact, for installations with severe angles, the coefficient of friction may not contribute appreciably to the extraction force.
In some cases, the resistance can increase when the drag heads reach a bend or sweep within the conduit, and then decrease after the drag heads pass through this bend or sweep. Furthermore, this resistance may be attributable to obstructions or damage occurring within the conduit (eg, burrs, foreign matter, physical damage, or the like). Conform to this resistance, the tension on the strings of awa ^ tfe'iambi 'n generally increases. In this scenario, the variable speed strut 1502 can reduce the speed of the pull, thereby reducing the tension on the pull ropes. In this way, the variable speed tie rod 1502 can reduce the risk of exposing the drive ropes to excessive tension and / or damage the drive heads.
As a given extraction proceeds, the resistance to extraction may decrease or remain at a relatively low level. Figure 15 generally represents at point 1506 a speed or tension of the extraction at a given moment. As the tension remains relatively low or decreases, the variable speed strut 1502 can increase the rate of removal, at least until some maximum limit is reached. In this way, as long as the resistance remains relatively low, tie rod 1502 can increase the rate of removal and reduce the overall time and expense involved with removal.
In prior techniques to extract the wires into the conduits, lubricant is generally applied to the wires as they are drawn into and through the conduit. Hence, in these previous techniques, the speed with which the
<img file="MX338239B_D0057.tif" />
Extraction can be conducted can be limited by how quickly lubricant can be applied to the wires. Manifested in a different way, placing the lubricant on the wires during removal can be a performance bottleneck. However, the different reduced installation force techniques and components provided as part of integrated systems 110 can help eliminate the operational bottleneck, allowing general removal to be conducted more quickly. Accordingly, variable speed tie rod 1502 can take advantage of the operating potential offered by integrated systems 110 by increasing the extraction rate as appropriate in certain circumstances.
Tie rod 1502 may include appropriate mechanical components, such as an electric drive motor (not shown), which can operate rotary circular drum 1508. Only for example, Figure 15 carries the tow rope 412 of Figure 4. Pull rope 412 can be attached to cable pull head 902, with pull rope 412 secured to, and wound around rotary drum 1508. As drum 1508 rotates, drive rope 412 can be wound onto drum 1508 in the direction indicated by arrow 1510, thereby driving cable drive head 902 through a
<img file="MX338239B_D0058.tif" />
duct run determined. <sup>, nst</sup>d ^ aÍSiedao
Considered as a whole, the tie rod isng - to be of sufficient weight to withstand the drag forces that are likely to be encountered when the head 902 is removed through a given run in the duct.
Accordingly, tie rod 1502 can provide a mass that is relatively immobile compared to the forces encountered in a given pull. In addition it should be noted that different struts 1502 having different pull capacities may be appropriate in different pulls, depending on the pull forces expected to be encountered during these pulls.
Figure 16 illustrates additional examples, usually denoted 1600, of trailing eyelets suitable for operation with integrated systems for wire and cable installations. More specifically, FIG. 16 illustrates examples of drive grommets, indicated by 1602A, in which a cylindrical sleeve or barrel portion 1604A is screwed to receive head portion 1606A. By exposing the above in a different way, the sleeve portion or barrel 1604A can be screwed to match the corresponding threads of the head portion 1606A. As indicated with the number
1608, the 1604A barrel or sleeve portion may be marked as appropriate to indicate where to place the
<img file="MX338239B_D0059.tif" />
<sup>, NST</sup>EU<sup>OR</sup>The 'p<sup>EXICAf</sup>'Or bending tool, when clamping the fi & siSig-a 1602A grommet over the end of a conductor.
Figure 16 illustrates other examples of drive grommets, generally indicated by the number 1602B, in which the head portion 1606B is threaded to receive the cylindrical portion of the sleeve or barrel 1604B. Also, head portion 1606B can define any number of openings 1610A and 1610N (collectively, openings 1610). These openings 1610 can receive adjusting screws or other suitable fasteners 1612A and 1612N (collectively fasteners 1612), configured to secure head portion 1606B to sleeve or barrel portion 1604B. In the example shown in Figure 16 at point 1602B, fasteners 1612 can engage the threaded portion of openings 1610 when drive lugs 1602B are assembled, thereby closing head portion 1606B relative to the cylindrical portion sleeve or barrel
1604B.
As generally shown at point 1602C, trailing grommets can be assembled on a given trailing cable or rope, such as the carry of Figure 12 at point 1202A. First, the pull cable 1202 is passed through the interior of a cylindrical portion of the sleeve or barrel 1604C (which represents either the barrel portions 1604A or 1604B), and through the interior of the
<img file="MX338239B_D0060.tif" />
MEXICAN INSTITUTE OF THE FKOFIEOAD INDUSTRIAL head portion 1606C (which represents either the head portion 1606A or 1606B). Subsequently, the head portion 1606C and the sleeve / barrel portion 1604C are screwed together. Finally, the fasteners 1612B and 1612m can be screwed through the head portion 1606C, to screw the sleeve / barrel portion
1604C.
Figure 16 illustrates at point 1602D an assembled tow eye 1616 as installed on a tow rope or cable 1202B. In general, the drive eyelet assembled at point 1616 can represent any of the configurations illustrated at points 1602A, 1602B, or
1602C. As described in previous drawings, a stop 1604 can be secured to the end of the pull cable 1202B. Furthermore, one end of a spring or other elastic element 1602 can engage stop 1604, and another end of spring 1602 can engage the interior of the front of assembled drive eyelet 1616. Generally, the head portions from 1606A to 1606C (collectively, head portions 1606) can be captured on the tow cables 1202 during manufacturing, when the stop 1604 is secured to the end of the tow cable 1202. As Described in greater detail below, trailing cable 1202 and head portions 1606 can be reused for any number of individual withdrawals, while the
INSTITUTE <sup>Mf</sup>'' £ q'Áq portions of the sleeve and barrel 1604 p ueaeo ^ qt're-emr '- for different extractions, by new dojrcones of ^ -m-angcrtt or barrel 1604 attached to the portions of the head 1606 for each extraction.
Once one or more particular conductors are pulled through a conduit, the assembled drive lug 1616 can be disassembled in the following manner. First, if the assembled drive eyelet 1616 includes fasteners (eg, 1612A to 1612m, collectively fasteners 1612), these fasteners 1612 can be released, allowing head portions 1606 to unscrew relative to the sleeve portions or barrel 1604. Otherwise, the head portions 1606 may be unscrewed directly from the sleeve or barrel portions 1604. Once the head portions 1606 and the sleeve or barrel portions 1604 are fully disengaged from each other, the pull cables 1202B and head portions 1606 may be separated from the conductor as they are drawn through the conduit, and reused in future conduit runs.
Referring to head portions 1606, these head portions can be connected to any number of different cuff or barrel portions.
1604. More specifically, different portions of the sleeve or barrel 1604 can be dimensioned as appropriate.
T ΆΛΊΟΪ
MEXICAN INSTITUTE DS THE PROPERTY
INDUSTRIAL to receive conductors of different sizes or gauges. Therefore, the different portions of the sleeve or barrel 1604 can have different physical dimensions (eg, inside diameters, outside diameters, lengths, thickness, composition, etc.). However, these different sleeve or barrel portions 1604 may be face down or face up as appropriate to connect the common size head portions 1606. Therefore, the head portions 1606 can be used to draw a variety of conductors of different sizes through the conduit, connecting the portions of the differently sized sleeve or barrel 1604.
In light of the foregoing description, the physical connection interface between the head portions 1606 and the differently sized sleeve or barrel portions 1604 can be standardized. For example, the portions of the sleeve or barrel 1604 and the portions of the head 1606 can be joined by coupling the screwed elements. However, the example shown in Figure 16 is provided only to facilitate the present description, and implementations of this description may employ other standardization techniques without departing from the scope and spirit of the present description.
Having described the examples of the portions of the head 1606 and sleeves 1604 of FIG. 16, we made | lhn.lt. · *
MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY various observation s. Although Figure 16 illustrates threaded and sleeve heads, the implementations of this disclosure may also include smooth or unthreaded head and sleeve portions, while sliding together within the hitch. Examples of such smooth head portions and sleeves are described in greater detail below in Figure 20. In addition, implementations of fasteners 1612 may include bolts that slide into openings 1610 in head portion 1606 and into corresponding openings defined in sleeves 1604. When portions of head 1606 and sleeve 1604 are Hooked together, their corresponding openings can be aligned to receive the bolt. Furthermore, it was observed that any of the head portion 1606 or sleeve 1604 can serve as a male portion in this latching relationship shown in Figure 16.
Fig. 17 illustrates examples of unthreaded drive grommets, generally indicated by the number 1700. As shown in Fig. 17, a representative head portion 1701 may define a passage 1702, dimensioned as appropriate to receive a bolt 1704. As can be understood from FIG. 17, head portions 1701 provide additional examples of head portions 1606 illustrated in FIG. 16. Additionally, implementations of this description may include
<img file="MX338239B_D0061.tif" />
head portions 1701 and 1606 having different configurations without departing from the scope and spirit of the present description.
As indicated in item 1706, the head portion 1701 can slide into a representative sleeve or barrel portion 1604, carried in FIG. 16. More specifically, the sleeve or barrel portion 1604 may be of generally cylindrical configuration, defining an interior passage 1708. The interior passage 1708 can be dimensioned to receive the end of the head portion 1701.
In the examples shown in Figure 17, the sleeve or barrel portion 1604 can define a passage 1710, which has an axis that is generally perpendicular to an axis of the interior passage 1708. When the head portion 1701 is slid far enough within barrel portion 1604, passage 1702 is aligned with passage 1710. At the same time, this alignment can allow bolt 1704 to slide into both passages, as indicated in item 1712, and secure the pull rope or cable 1172 to barrel portion 1604.
The physical dimensions of bolt 1704 can vary in different implementations. For example, the unthreaded drive lugs 1700 may rely on a friction fit between bolt 1704 and sleeve 1904 and / or head portion 1701 to secure bolt 1704 in place. In other cases, bolt 1704 can be secured in engagement with the
<img file="MX338239B_D0062.tif" />
IMPI
MEXICAN INSTITUTE
DELA PROPERTY 1 portion of sleeve or barrel 1604 and / or portion of l<sup>i</sup>to<sup>> LS</sup>C<sup>t</sup>F
1701 by separate clamping means (by oj-emplo, ·· tuoroac ·, split pins, etc.).
As previously described, the sleeve portion or barrel 1604 can be bent at the end of a given conductor for removal through the conduit. In some cases, a particular 1700 unthreaded drag eye assembly may be assembled on drag heads that include one or more other assembled drag eyelets. These other trailing eyelets on the trailing head may or may not be the same type as the 1700 trailing eyelets.
Once the head portion 1701 is secured to the barrel portion 1604, removal can proceed. After removal is complete, the 1700 unthreaded drive lugs can be disassembled by reversing the assembly process described above. Thereafter, the folded barrel or sleeve portion 1604 may be discarded or recycled. However, head portion 1701 can be repeatedly used for other extractions, after assembly with other sleeve or barrel portions 1604.
Figure 17 illustrates examples in which head portion 1701 is a male portion that slides into the corresponding female portion provided by the portion
MEXICAN INSTITUTE OF PROPERTY
INDUSTRIAL
<img file="MX338239B_D0063.tif" />
of the sleeve or barrel 1604. However, it is noted that the implementations of the present disclosure may also include the head portion 1701 serving as a female portion, which receives the barrel portion 1604 as a male portion.
Figures 18A and 18B illustrate examples, generally indicated by the number 1800, of delivery systems configured for delivery to job sites. More specifically, Figures 18A and 18B illustrate exemplary implementations of delivery systems represented in block form at point 408 of Figure 4, and as represented at point 600 of Figure 6. As shown in the figures, a given reel that is loaded with one or more appropriate conductors can be loaded into a given delivery system. At the same time, the delivery system can be transported to a job site, with one or more other delivery systems loaded and configured. For example, a given job site may be programmed for one or more different withdrawals through different conduit systems, and a different delivery system may be configured for each of the different withdrawals.
Figures 18A and 18B illustrate the transportation of loaded delivery systems to a job site using a flat bed trailer. On the job site, drivers can be pulled from delivery systems, delivery systems remain loaded in the trailer. However, in other scenarios, delivery systems can be unloaded from the trailer and relocated where appropriate to the job site before drivers are removed.
Figure 19 illustrates additional examples of the trailing eyelets, generally indicated by the number 1900. In general, the above descriptions directed to the trailing eyelets apply equally to the trailing eyelets 1900 shown in Figure 19. However, the Figure 19 illustrates additional features that can be included in at least some implementations of the drag eyelets. For example, markings 1902A, 1902B, and 1902C (collectively, markings 1902) may indicate example commands or sequences for making bends when the 1900 trailing eyelets are folded. More specifically, the first bending can be performed by placing the bending tool approximately where indicated by the 1902A mark, a second consecutive bending may be performed by placing the bending tool approximately where indicated by the 1902B mark, and a third bending consecutive can be done by placing the bending tool approximately where indicated by the mark
1902C.
<img file="MX338239B_D0064.tif" />
As will be seen from reading the above description with reference to FIG. 19, it has been observed that the order of the bends proceeds along a representative body or sleeve portion 1904 in the general direction indicated by arrow 1906 . More specifically, assuming that a particular 1908 drive eyelet includes a 1910 head portion adhered to the body or the 1904 sleeve portion, the first bend made at approximately the 1902A mark may be closest to the 1910 head portion. . The second bend made at approximately the 1902B mark may be the next closest to the 1910 head portion, while the last bend performed at approximately the 1902C mark may be the furthest from the 1910 head portion.
The body bend and sleeve portion 1904 can displace a certain portion of the material that constitutes the body portion or sleeve 1904. In implementations that perform the bending sequence in the order indicated by the sequence marks 1902A through 1902C, the material displaced by bending operations can generally flow in the direction indicated by arrow 1904. In this way, the displaced material can flow to the distal end of a conductor on which the drive eyelet 1908 is bent.
In light of the above description, the first fold
IMPI <sup>, NST |</sup>MEXICAN GUARDIAN OF THE PROPERTY
INDUSTRIAL
<img file="MX338239B_D0065.tif" />
Performed approximately where indicated by mark 1902A may result in some displaced material flowing in both directions (i.e., some towards the 1910 head portion, and some of the displaced material flowing in the direction indicated by arrow 1906) . The second bend made approximately where indicated by the 1902B mark may also result in some of the displaced material flowing in both directions. However, the displaced material flowing opposite direction 1906 would be blocked by the first fold 1902A. Similar considerations apply to material displaced by the third fold made approximately where indicated by the 1902C mark. Accordingly, performing the bends in the order indicated by the markings 1902A through 1902C may allow the material displaced by the bends to flow unimpeded along body portion 1904 in the direction indicated by arrow 1906.
In the examples shown in Figure 19, the bending sequence is indicated by markings 1902A through 1902C (for example, one marking 1902A may indicate the first approximate location of folding, two markings 1902B may indicate the second approximate location folding, and so on). However, implementations of this description may employ other techniques to indicate a suggested sequence or order of dubbing. For example in
IMPI
MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY
<img file="MX338239B_D0066.tif" />
some implementation scenarios, the ptontons of<sup>a> ri</sup>ierp ° 1904 can be marked with the numbers “1”, “2”, and “3, to suggest folding orders and / or locations.
In other examples, body parts can be color coded. For example, a first consecutive bending location may be color coded red, a second consecutive bending location may be white color coded, and a third consecutive bending location may be blue color coded, and so on these bending locations Color-coded can be associated with the appropriate mnemonic (eg, "red-white-and-blue).
For the sake of convenience of description only, and not to limit possible implementations, the foregoing drawings and descriptions may be related to the examples including portions of the body that are folded three times. However, implementations of this disclosure may incorporate any suitable number of bends, without departing from the scope and spirit of the present disclosure.
As previously described with the above drawings, successive or adjacent folds made along the body portion 1904 can be rotated relative to each other, as illustrated in, for example, Figures 14 through 16. As is suggested in these drawings, the
<img file="MX338239B_D0067.tif" />
<sup>nct</sup>The successive folds can be roughly rotated relative to one another. To facilitate these rotation between adjacent or successive bends, the body portion 1904 can be marked to produce a guide for the alignment of the bending tool and the relative body portion therebetween when successive bending is performed. For example, as shown in Figure 19, the 1908 drag eye may include the 1912 mark line that crosses the marks from 1902A to 1902C, so that the bending tool can be oriented toward the intersections between the line brand name 1912 and brands from 1902A to 1902C. Figure 19 indicates a first junction at point 1914A (between the 1912 mark line and the first 1902A mark), the second such junction at point 1914B (between the 1912 mark line and the second 1902B mark), and a third of said crossings at point 1914C (between mark line 1912 and third mark 1902C).
In light of the above description, the 1908 drive eyelet can be bent by following the 1912 marking line along the 1904 body portion, and placing the bending tool at approximately the intersections of 1914A through 1914C (collectively, intersections 1914) when consecutive bends are made. Following the crossings 1914 indicated in Figure 19 may result in a rotation compensation bending sequence shown above in Figure
13. Although Figure 19 provides examples in which the
INSTITUTO MEXICANO Ut LA 1912 marking lines trace a generally spiral configuration along the 19Ό4 body portion. Other techniques to guide the bending process to achieve rotation compensation bending sequences may also be possible. For example, body portion 1904 may be marked with mixed marks or marks (ie, longitudinal with body portion 1904) indicating a rotation alignment for the bending tool.
Referring to the head portions 1910, these head portions may carry a textual subject or another matter subject. The subject matter may be printed, etched, engraved, debossed, textured, or otherwise visibly affixed to portions of the head 1910. Examples of the subject matter may include, but are not limited to: size of conductors over which a particular 1908 drag eye is bent or dimensioned to be bent; the trademark, logo, or other brand information associated with the 1908 trailing eyelet, or associated with the integrated wire installation systems of which the 1908 trailing eyelets are a part; or the like.
Figure 20 illustrates a 1908A drag eyelet, with head portion 1910 and body portion 1904 assembled. The markings from 1902A to 1902C and 1912 can facilitate consecutive bends along the in üii mi *
MPI, ¡:>. ic λ λ '· Y /' '• I heard LODO body portion 1904, to adhere the 1908A trailing eyelet onto a representative 402 conductor. Also, the 1908A trailing eyelet may include the 2004 label representing a conductor size, or any other appropriate information.
The 1908B trailing eye is shown attached to a conductor, or may include other examples of 2006 labels, featuring logos or the like. In some implementations, the particular 1908 trailing eyelet may include the 2004 label or the 2006 label. In other implementations, the particular 1908 trailing eyelet may include the 2004 label and the 2006 label, with the 2004 and 2006 labels appearing on different sides of the trailing eyelet 1908. In addition, the 2004 and / or 2006 labels may appear in locations other than those shown in Figure 20 without departing from the scope and spirit of the present description.
Fig. 21 illustrates additional details of the drag eyelets, generally indicated by the number 2100, as the drag eyelets pass through the fold. As generally shown with number 2102, a representative drag eyelet 1908A is slid over the representative conductor 402. At point 2104, Figure 21 provides an expanded internal view of the representative drag eyelet 1908A. This expanded internal view is simplified and not drawn to scale, and is provided only to facilitate the present description. Returning to the internal view
IMPI
MEXICAN INSTITUTE PE THE INDUSTRIAL PROPERTY
<img file="MX338239B_D0068.tif" />
Expanded 2104 in greater detail, representative eyelet 1908A may define an internal bore 2106 to receive an end of conductor 402. For example, internal bore 2106 may be machined into a blank material using a suitable drill bit. The bit may have a tapered cutting end, so that it leaves a seat portion or angled lip 2108 within the target after the machining operation. Subsequently, another perforation 2110 can be perforated through the target as shown, which has a diameter D2 that is less than the diameter D2.
Internal bore 2106 may be formed from the cylindrical target of the material, for example, by machining through the target at a distance L with a bit having a diameter D1. Examples of suitable materials may include, but are not limited to, aluminum, aluminum alloy (eg, 06061-tempered aluminum), or other materials suitable for conductor bending and conductor engagement. In general, the drive grommets described here can be made of any metal that has high friction characteristics or is relatively sticky when cold, particularly when it is bent in close contact or metals generally used for the manufacture of electrical conductors (for example, from aluminum, copper, and the like).
As shown in item 2112, the trailing eye, τ my
MEXICAN INSTITUTE ¥> <- -— £ T »
OF THE PROPERTY
INDUSTRIAL _ j — i—
1908A can be bent on conductor 402, with the bending technique shown in Figure 21 understood as illustrative rather than limiting. FIG. 21 indicates at point 1908B, drive eye 1908A as it is bent over conductor 402.
Figure 21 shows at point 2114 internal details related to the 1908B folded drag eye. In the example shown, drive eyelet 1908B can be bent into stripped portion 2116 of conductor 402, with stripped portion 2116 passing into internal bore 2106. A body portion 2118 of a stop member 2120 can pass into the smaller bore 2110, a portion of the ball 2122 being accommodated and contacting the lip portion 2108 when the stop member 2120 is fully seated internally within of the 1908B drag eyelet (to the right in the example shown in figure 21). In some cases, one end of body portion 2118 may be exposed through the front of drag eye 1908. When the diameter D2 is smaller than the diameter of the ball portion 2122, the ball portion 2122 can be captured internally within the folded drive eyelet 1908B.
The ball portion 2122 can be manufactured in a previously defined dimension, depending on the size of the 1908 trailing eye and / or the 402 conductor gauge with which the 1908 trailing eyelets are to be used.
MEXICAN INSTITUTE Dt La PROPICIAD
INDUSTRIAL that the ball portion 2122 is fully seated in the lip area 2108, can provide a stop where the end of the conductor 402 can make contact. By exposing it in a different way, the conductor 402 can be inserted into the drive eyelet 1908 until the end of conductor 402 rests against ball portion 2122. At this point, conductor 402 is fully positioned at the bottom of drive eyelet 1908, and drive eyelet 1908 can be bent over conductor 402.
Some implementations of the present disclosure may employ stripping tools that strip away a previously defined length of conductor 402 insulation, exposing that length of bare metal. If any portion of the uncoated metal remains exposed after conductor 402 is inserted into trailing eye 1908, this may indicate that conductor 402 is not fully seated at the bottom of trailing eye 1908 and may be further inserted to get a safer fold.
In the example shown in Figure 21, the 1908 drive eyelet is bent over the bare metal conductor, with no captured insulation between the 1908 drive eyelet and the bare metal conductor. Therefore, drag forces can be transmitted from the drag eyelet.
1908 directly to the bare metal conductor. Without
<img file="MX338239B_D0069.tif" />
However, other implementations are possible, in which at least a portion of the bend between the 1908 drive lug and the bare metal conductor can capture at least a portion of the insulation around the conductor.
402.
In the bending examples shown and described herein, the pull eyelets can be bent over the outer surfaces of the conductors. The implementations of the bending techniques described here can utilize all of the conductor strands, without removing or cutting any of these strands. As can be appreciated from this description, removing some of the strands can reduce the pull force of the bend between the conductor and the pull eye. Furthermore, the bending techniques described here can operate without plugs, shims, or other additional apparatus forced into the conductor strands as part of the bending process. Accordingly, bending forces can act only on the outer portion of the conductor, without using such plugs, shims, or the like to generate internally counteracting forces from within the conductor strands.
Figure 22 illustrates the examples of outside diameters, inside diameters, and wall thicknesses, generally indicated by the number 2200, suitable for implementing the different drive grommets described herein. Figure 22 provides a representative drag eye at point 2202,
<img file="MX338239B_D0070.tif" />
this drive eyelet 2202 including a hollow, cylindrical sleeve portion 2204 and a somewhat rounded head portion 2206. The different dimensions and proportions shown in Figure 22 are illustrative, and Figure 22 is not drawn to scale.
As described above, different drive grommets 2202 may be provided to bend over conductors having different sizes or gauges. Therefore, 2202 drive grommets may be available in different sizes, depending on the gauge of the conductor being installed. In general, the length of the sleeve portions 2204 can be approximately the same, regardless of the size or gauge of the conductor being installed. However, the diameter of the sleeve portion 2204 can vary to accommodate different sizes or gauges of conductors.
In a similar manner, the diameter of the head portion 2206 may also vary to accommodate these different sizes or gauges of conductors. However, the overall length of the head portion 2206 can vary, depending on the radius of the rounded portion as shown in Figure 22. Therefore, although the length of the portions of the sleeve 2204 may be approximately the same regardless of the size or gauge of the conductor being installed, the overall length of the grommets is
MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY this variaci
<img file="MX338239B_D0071.tif" />
Drag 2202 may vary somewhat, with the lengths of the head portions 2206 being different.
As represented by the number 2208, Figure 22 provides a representative cross-sectional view of one size of a trailing eyelet 2202. As represented by the number 2210, Figure 22 provides a representative cross-sectional view of another size of a trailing eyelet. 2202. In the example shown in Figure 22, view 2208 corresponds to drag eye 2202 dimensioned for removal with a smaller conductor, compared to the drag eye shown in view 2210.
Referring first to view 2208, this size of drive eyelet 2202 can be characterized by a first outside diameter (ODi), and a first inside diameter (IDO. The difference between the OD<sub>1</sub> and ID-ι represents a wall thickness associated with this size of drag eye 2202.
Now referring to view 2210, this size of drag eye 2202 can be characterized by a second outer diameter (OD<sub>2</sub>), and a second inside diameter (ID<sub>2</sub>). The difference between OD<sub>2</sub> and the ID<sub>2</sub> represents a wall thickness associated with this size of drag eye 2202.
Although Figure 22 is not drawn to scale, the wall thicknesses of the two drive grommets represented by numbers 2208 and 2210 may be approximately the same, although the outside diameters and
<img file="MX338239B_D0072.tif" />
<img file="MX338239B_D0073.tif" />
INSTITUTO MEXICANO DE LA PROHEDAD interior diameters may vary to accommodate different sizes or sizes of conductors. More speciticaméri'téT the inner diameters ID ^ and ID<sub>2</sub> they can be sized to tightly accommodate a conductor of a given size or gauge. Exposing them differently, ID-ι and ID bore diameters<sub>2</sub> they can be selected for a given conductor gauge, so that the conductor encounters slight friction or physical resistance when being inserted into the trailing eyelet 2202. In different implementations, different tolerances or gaps are possible between the trailing eyelets 2202. and the driver. In example implementations, however, these tolerances may be less than or equal to approximately 100 mils. However, experimentation with bending of the eyelet 2202 with different tolerances may produce similar or different results. A tight fit described herein can make safe bending possible without using the plugs, wedges, or other auxiliary devices, as described above.
Regarding wall thicknesses, as defined in IDt and ID inside diameters<sub>2</sub> and the outer diameters OÜ! and OD<sub>2</sub>, different wall thicknesses are possible in different implementations. However, in the example implementations, these wall thicknesses may be less than or equal to approximately 1/8 ”(0.317
<img file="MX338239B_D0074.tif" />
<sup>78</sup> IMPI
MEXICAN INSTITUTE
OF THE PROPERTY
INDUSTRIAL cm). However, once again experimentation with different wall thicknesses and materials can produce similar or different results.
As described above, the implementations of this disclosure can employ various techniques to indicate a sequence and / or orientation of rotation of successive or consecutive bends along the drive grommets. Referring to Figure 23, this figure illustrates rotation sequences and / or orientations, generally indicated by the number 2300, for making successive bends along representative drive grommets 2302 and 2304. More specifically, representative drag grommets 2302 and 2304 can incorporate any number of color-coded areas 2306A, 2306B, and 2306C (collectively, color-coded areas 2306). These color-coded areas 2306 may or may not include representations of the numbers (eg, "1", "2", and "3") as shown in Figure 23.
In the example implementations, the 2306A color-coded areas may be printed or otherwise painted as red. The 2306B color-coded areas can be painted white, and the 2306C color-coded areas can be painted blue. Accordingly, the trailing grommets 2302 and 2304 can employ the color-coded areas 2306A through 2306C in conjunction with an apparatus.
<img file="MX338239B_D0075.tif" />
mnemonic or memory devices, such as "red, white, and blue." For example, the color-coded areas from 2306A to 2306C may suggest personnel operations to double the red area first, the white area second, and the blue third.
Also indicated by the numbers 2302 and 2304 are some implementations of the drag grommets which may indicate rotational orientations of successive bends. In the examples shown, the red area can be bent in a given rotational orientation, followed by the offset white bending by approximately 90 °, followed by the blue area bending after offset by approximately 90 ° from the previous bend.
As shown in No. 2302, trailing grommets may be printed or otherwise marked with logos, trademarks, or other visual matters. As shown under number 2304, the trailing eyelets can be marked to indicate a gauge of the wire for which a particular trailing eye is dimensioned.
FIG. 24 illustrates sequences and / or rotational orientations, generally indicated by the number 2400, for making successive bends along representative drive grommets 2402A, 2402B, 2402C, and 2402D (collectively, trailing grommets 2402). Generally, 2402 trailing eyelets
INDUSTRIAL may incorporate hyphens or other prompts to perform functions similar to those described above in relation to the 2306 color-coded areas shown in Figure 23. In the example shown in Figure 24, a location for a first fold can be indicated by a single hyphen (ie Ί ”), a location for the next fold can be indicated by a double hyphen (ie ΊΓ), and the location for the next fold can be indicated by a triple hyphen (ie "lll).
Similar to the description above with respect to the rotation orientation of successive bends, the drag eyelets 2402 shown in Figure 24 may also suggest orientation or a bending tool when making successive bends. For example, as shown most clearly in numbers 2402B or 2402D, the location of a single indent may indicate where to orient the bending tool when a first bend is made. As shown more clearly with the numbers 2402A or 2402C, the location of the double indent can indicate where to orient the bending tool when performing a second bend. As shown most clearly with the numbers 2402B or
2402D, the location of the triple indent may indicate where to orient the bending tool when a third bend is made.
Although the above description is mainly
<img file="MX338239B_D0076.tif" />
MEXICAN INSTITUTE Dt THE PROPERTY
INDUSTRIAL
<img file="MX338239B_D0077.tif" />
Focusing on wires or cables pulled —— through — through a conduit, the description can also be applied to shielded cables, such as MC cable, or any other cable that does not necessarily need to be pulled through conduit. Figures 25A and 25B illustrate embodiments in which the cable is a shielded cable. Figure 25A illustrates the trailing head assemblies of a shielded cable, generally indicated with the number 2500. The respective drive grommets 2506A to 2506C are shown attached to the corresponding insulated conductors 2504A to 2504C which are comprised of a cover or shield 2502 which can be constructed of any suitable metallic or non-metallic material. It should be noted that the drive grommets 2506A to 2506C as shown in Figure 25A can include any of the alternative drive grommets explained above and can be attached to the corresponding insulated conductors 2504A to 2504C in any manner described above. The drive lugs from 2506A to 2506C serve to attach insulated conductors from 2504A to 2504C to the respective drive cables from 2508A to 2508C. Although Figure 25 illustrates each of the insulated conductors 2504A to 2504C attached with one of the drive lugs 2506A to 2506C, it should be understood that fewer than all the insulated conductors of shielded cable 2500 may be attached with one of the eyelets. drag.
MEXICAN INSTITUTE OF PROPERTY
INDUSTRIAL
<img file="MX338239B_D0078.tif" />
As described above, traction cables 2508A to 2508C can be constructed of any suitable metallic or non-metallic material and can be coated or impregnated with friction reducing compounds, as explained in more detail above. In addition, the 2508A to 2508C tow cables can be constructed in any way as explained above.
In order to construct the trailing head assemblies of the shielded cable 2500 illustrated in FIG. 25, the shield 2502 of the shielded cable can be cut and removed to expose the insulated conductors from 2504A to 2504C; such as a grounded conductor, which is not insulated; and any other material, such as a filler material for the shielded cable. In addition to cutting and removing shield 2502, other materials, such as adhesive tape, comprising insulated conductors 2504A to 2504C, uninsulated conductors, and any other filler material may also be cut and removed. According to the embodiments, a portion of any grounding conductor and a portion of any filler material that can be removed from the shielded cable 2500 by cutting the conductor to ground and returning the filler material to shield 2502.
Insulated conductors 2504A to 2504C should be cut to lengths associated with staggered lengths of tow cables 2508A to 2508C,
<img file="MX338239B_D0079.tif" />
as explained additionally in previous paragraphs with respect to at least figure 8, and a portion of the insulation of the insulated conductors can be stripped to expose a portion of the conductors to fix the drive lugs from 2506A to 2506C, as explained above additionally with respect to at least Figures 7 and 11. Attaching the drive lugs from 2506A to 2506C to the conductor portions of the insulated leads from 2504A to 2504C results in trailing head assemblies of shielded cable 2500 as illustrated in Figure 25A.
Shielded Cable Pull Head Assemblies
2500 As illustrated in Figure 25A they can be removed over obstructions, such as pulleys and struts, when they are being installed. Figures 25A and 25B further illustrate ways to protect the trailing head assemblies of shielded cables 2500 from such obstructions and to maintain shield 2502 by preventing it from slipping off insulated conductors 2504A to 2504C and any other materials comprised within the shield while the shielded cable is being installed.
As shown in FIG. 25A, a spring, nail, or other insertable object 2510 may be inserted into shield 2502 of shield cable 2500 to prevent the shield from slipping off the insulated conductors of the
2504A to 2504C during installation.
MEXICAN INSTITUTE DS THE PROPERTY
INDUSTRIAL
<img file="MX338239B_D0080.tif" />
As illustrated in Figure 25B, link material 2512, such as tapes, can be applied to shielded cable 2500 to protect it from slippage between shield 2502 and insulated conductors 2504A to 2504C during installation of the shielded cable. Link material 2512 also protects screw 2510 from dislodging or being dislodged from shielded cable 2500 during installation of shielded cable. Additionally, the link material 2512 protects the trailing head assemblies of the shielded cable 2500 from being caught in any obstructions during installation. According to the embodiments, the bonding material can be applied to insulated conductors 2504A through 2504C of shielded cable 2500 from before cut on shield 2502, as illustrated in Figure 25A; past the cut; and on the armor itself. According to additional modalities, bonding material 2512 can be applied from a minimum of six to eight inches (15.24 to 20.32 cm) in shield 2502, past the cut of the shield, and up to a minimum of six to eight inches (15.24 20.32 cm) in insulated conductors from 2504A to 2504C. The link material
2512 it can be partially overlapped on itself, and any number of layers of the bonding material can be applied.
In additional embodiments, the protective material, such as the shrink wrap, can be applied over
IMPI
MEXICAN INSTITUTE Di. THE NtOFlEDAD the link material 2512 to protect it 'Íft! FéW<sup>-</sup>More 'slippage between shield 2502 and alsfarTüT conductors from 2504A to 2504C during installation of the shielded cable. The protective material may also further protect screw 2510 from being evicted or being evicted from shielded cable 2500 during installation of the shielded cable. Additionally, the protective material can protect the trailing head assemblies of the shielded cable 2500 from being caught in any obstructions during installation. According to the modalities, the protective material can be applied completely or partially on the bonding material 2512.
As described above with respect to FIG. 5, multiple parallels, each consisting of one or more conductors 402, may be wound onto a reel 406 layered, one on top of the other, for delivery to a delivery site. job. Each parallel on reel 406 can then be delivered separately for independent multiple wire / cable pulls. Figure 26 illustrates a cross section of a reel 406 containing multiple parallels wound in layers from 2602A to 2602C on the reel. For example, reel 406 may contain a first parallel consisting of four 210-foot (6400.8 cm) long 350 kcmil 402 conductors in first layer 2602A, a second parallel consisting of three 185-foot (5638.8) 350 kcmil 402 conductors. cm) in length in a second layer
<img file="MX338239B_D0081.tif" />
<img file="MX338239B_D0082.tif" />
DELA PHOFICOAO: - .. **
INDUSTRIAL ”** i-L _—- * '**
2602B, and a third parallel consisting of five conductors of --- 350 kcmil 402 of 100 feet (3048 cm) in the third layer 2602C.
At the time of reel 406 administration to the job site, installers can pull the third parallel of the third layer 2602C, and then the second parallel of the second layer 2602B, and finally the first parallel of the first layer
2602A.
Figure 27 illustrates a routine 2700 for forming the multi-layer parallels on a single reel 406. It should be appreciated that more or fewer operations can be performed than those shown in the figures and described herein, and that the operations can be performed in parallel, or in a different order than described here. Routine 2700 begins at step 2702, where the end of the first parallel wound on reel 406 is attached to flange 606 of the reel. The entire length of conductors 402 of the first parallel can be wound onto reel 406, leaving one end of the first parallel exposed. In accordance with embodiments, conductors 402 of the first parallel may be terminated with drive grommets 700 which are additionally connected to a drive head assembly 1000, in a manner previously described at least in Figures 7 and 10. As shown in Figure 28, the drive head assembly can be covered with a protective cover 416, as previously described with
<img file="MX338239B_D0083.tif" />
HEXICAN IS'CTITUTE 01. LA Wf<sup>?</sup>P-? V¿ with respect to figure 4. The head assembly 1000 can be connected in addition to a circuit coTtea <'cuer9T2802 or any other material to handle the terminal end of the parallel in the assimilation, storage, administration , and deliver. Rope short circuit 2802 may be stapled or otherwise secured to the inside of a flange 606 of reel 406, as further illustrated in FIG. 28.
From step 2702, routine 2700 proceeds to step 2704, where the first parallel winding on reel 406 is wrapped so that it contracts. This can be accomplished by winding one or more layers of shrink wrap material 2804 over the first parallel of reel 406, as further shown in Figure 28. Shrink wrap material 2804 can serve to separate multiple parallels into layers on reel 406, allowing each parallel to be delivered without interference from layer 2602A to subsequent 2602C. Routine 2700 then proceeds from step 2704 to step 2706, where a bore 2902 is drilled through the inside of a flange 606A on reel 406, as shown in Figure 29. Perforation 2902 may be located just above the first layer of shrink wrap material 2602A on flange 606A, as further shown in the figure. Drill 2902 may be of sufficient size to accommodate a 402 conductor of the
IMPI
MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY second parallel to be wound on a 406 reel,
<img file="MX338239B_D0084.tif" />
as will be described later.
Next, routine 2700 proceeds from step 2706 to step 2708, where the terminal ends of the 402A through 402C leads of the second parallel are positioned so that the end of one lead 402A is offset from the ends of the remaining leads 402B to 402C, as shown in Figure 30. In one embodiment, the end of the offset conductor 402 may be 12 to 18 inches (30.4 to 45.7 cm) longer than the ends of the other conductors. Starting with step 2708, routine 2700 proceeds to step 2710, where protective covers 3002 are installed at the ends of conductors 402A through 402C of the second parallel. Protective covers 3002 can be a short length of hose, made of NYLON, PVC, or other polymeric material, for example, that slides over the ends of conductors 402A through 402C. Protective covers 3002 can serve to protect the insulation of conductors 402A through 402C from the second parallel as they are wound on reel 406 and over the ends of the terminal, as shown in Figure 31. Conductors 402A through 402C The second parallel can then be bonded together using multiple layers of traction tape 3004 or other bonding material, as further shown in Figure 30.
IMPI
MEXICAN INSTITUTE OF PROPERTY
INDUSTRIAL
<img file="MX338239B_D0085.tif" />
Routine 2700 then proceeds from operation 2710 to operation 2712, where the end of longest conductor 402A is drawn through bore 2902 drilled through flange 606A of reel 406 in operation 2706 above, as shown in Figure 31. Longer conductor 402A can then be stapled or otherwise secured to the outside of flange 606A. Then, beginning with step 2712, routine 2700 proceeds to step 2714, where conductors 402A through 402C of the second parallel are wound onto reel 406 on top of the first shrink wrap layer, as additionally shown in figure 31. Once the full length of conductors 402A through 402C from the second parallel have been wound onto reel 406, the end of the second parallel can be adhered to flange 606A and routine 2700 repeated to add the third layer 2602C to the reel of cable. It will be appreciated that any number of parallels can be layered onto reel 406 in this manner, provided that the full number and weight of combined conductors 402 for multiple parallels does not exceed the significant capabilities of reel 406 or consolidated systems. of delivery 408 being used.
Illustrative Applications
IMPI
<img file="MX338239B_D0086.tif" />
As shown in the table below, implementations of this description can save on the time spent by electrical contractor (EC) personnel. In presenting the following table, it is noted that the wire pull scenarios depicted in this table are illustrative only and that the implementations of the present disclosure may perform other wire pull scenarios without departing from the scope and spirit of the present disclosure. In addition, the estimates of direct labor cost and time provided in this table are illustrative only and may vary in different implementations of the present description. For example, the following table presents illustrative factors related to a 250 ft (76.20 m) top electrical conductor, with four size 500 conductors with a 1/0 ground conductor. However, the present description can be applied to other electrical conductors as well. Accordingly, the savings presented in the following table may also vary in the different implementations of the present disclosure.
In the table below, the two columns on the left present illustrative data related to traditional tube-to-tube and wire installations, while the next two columns provide illustrative data.
MEXICAN INSTITUTE OF PROPERTY
INDUSTRIAL
<img file="MX338239B_D0087.tif" />
1ΜΠ
MEXICAN INSTITUTE OF THE l'RCFIEDAQ INDUSTRIAL
<img file="MX338239B_D0088.tif" />
related to tube and wire installations made according to the present description. The right column is an illustrative list of installation steps, a percentage of total removal time, compared to times for EC electrical contractor personnel using traditional techniques.
<td colspan="4">Removal of 250 'of aerial cable, 4 conductors 500 with 1/0 to ground</td><td></td><td>Steps as% of total extraction time - using THHN contractor staff</td>
<td>Traditional Tube and Wire Installation</td><td></td><td></td><td>BBBBBB Enhanced Solutions</td><td></td><td>old</td>
<td></td><td>time - minutes</td><td>time - minutes</td><td></td><td></td><td></td>
<td>5 x 1,000 draws<sup>1</sup> of black conductor arrive at job site, contractor staff unloads them and transports them to extraction site</td><td> 45</td><td> 10</td><td>A single THHN reel with 5 conductors (brown, orange, yellow, gray and green) placed parallel on one reel</td><td></td><td></td>
<td></td><td></td><td></td><td></td><td></td><td></td>
<td>Contractor personnel prepare 5 cat ropes in preparation for removal - may need equipment and leveling</td><td> 30</td><td> 5</td><td>EC prepares 1 reel on cats in preparation for removal - may need equipment and leveling</td><td></td><td> 11®!;</td>
<td></td><td></td><td></td><td></td><td></td><td></td>
<td>5 gallon buckets of extraction lubricator and cleaning rags are transported to the extraction site</td><td> 2</td><td> 0</td><td></td><td></td><td></td>
<td></td><td></td><td></td><td></td><td></td><td></td>
<td>The EC applies before the phase to each 3x5 conductor</td><td colspan="2">15 HJ</td><td></td><td></td><td></td>
<td></td><td></td><td></td><td></td><td></td><td></td>
<td>Contractor staff pulls multiple ropes and braided rags through 250 'conduit</td><td> 10</td><td> 5</td><td>EC pulls pull cord from 250 ft conduit</td><td></td><td> 3%</td>
<td></td><td></td><td></td><td></td><td></td><td></td>
<td>EC prepares driver heads for exfraction</td><td> 60</td><td>iSiíííSfliSisíBsi;</td><td>Attach the drag eyelet to the pull rope:</td><td></td><td></td>
<td></td><td></td><td></td><td></td><td></td><td></td>
<td>Contractor personnel apply lubrication to the duct head at the start of removal</td><td> 30</td><td> 0</td><td></td><td></td><td> 10%</td>
<td></td><td></td><td></td><td></td><td></td><td></td>
<td colspan="3">The EC prepares to apply lubricant in the boxes of 1 extraction | 30 II 0</td><td></td><td></td><td>limi</td>
<td></td><td></td><td></td><td></td><td></td><td></td>
<td>The EC prepares the tie rod (screwed to the floor)</td><td> 30</td><td>i 15</td><td>EC prepares a lightweight strap</td><td></td><td> 10%</td>
<td></td><td></td><td></td><td></td><td></td><td></td>
<td>Cable removal begins, EC applies lubrication at 2 locations, and rope removal rate of 6 feet per minute</td><td> 45</td><td> 30</td><td>Cable extraction begins, the speed of rope extraction varies from 6 to 25 feet per minute (average 16'per minute)</td><td></td><td> 14%</td>
<td></td><td></td><td></td><td></td><td></td><td></td>
<td>Conductors and jacket are cleaned of lubricants</td><td>! Ϊ5</td><td>l 0</td><td></td><td></td><td> 5%</td>
<td></td><td></td><td></td><td></td><td></td><td></td>
<td>total minutes</td><td>| 3Ϊ2</td><td>T 655</td><td></td><td></td><td></td>
<td></td><td></td><td></td><td></td><td></td><td></td>
<td>6-man labor $ 70.00 per hour</td><td> $2,184.00</td><td> $305.67</td><td>[4 men</td><td></td><td> 100%</td>
<img file="MX338239B_D0089.tif" />
conclusion
Having provided the above description of the ,. figures in the drawings, several observations were made. In general, the above drawings are not drawn to scale, unless explicitly stated otherwise. Accordingly the dimensions or proportions of the particular elements, or the relationships between those different elements, as shown in the drawings are selected only for the sake of convenience of the description, but does not limit the possible implementations of the present description.
The different aspects of the integrated systems described here can be implemented in relation to wires, cables or conductors of any size and convenient. For example, different drive grommets of the integrated systems described herein can be provided for use on particular sizes of cable or wires. More specifically, the grommets can be sized as appropriate for different wire sizes or types of conductors (eg, copper or aluminum).
In general, the implementations of the integrated systems 110 described herein can reduce the risk of damaging the cable or wire during installation (for example, duct pulls or shielded cable installation). At the same time, the risk of damage to the equipment that is
IMPIOS
MEXICAN INSTITUTE. · Ί attributable to such wire damage pu den se7<sup>W</sup>i & ^ wwd§S ^ ££ In addition, these integrated systems 110 can reduce — the… risk of injury to personnel involved with the installation, as well as reduce the time and cost associated with isolation.
Personnel working in service centers can build the integrated cabling solutions described here.
Among other operations, these construction processes may include at least bending the driver's grommets and assembling the grommets within the trailing heads. These construction operations can be performed prior to delivering the cabling, assembly and integrated solutions to the job site. Put another way, integrated cabling solutions can be pre-assembled for delivery to a job site.
In light of the above description, the service center staff who build the integrated wiring solutions can be specially trained to assemble and build the integrated wiring solutions. In addition, your service center staff may be equipped with specially designed tools to facilitate efficient construction of integrated cabling solutions.
For example, service center personnel may be equipped with a team of spacers to remove a
<img file="MX338239B_D0090.tif" />
uniform amount of insulation prescribed for conductors and can also be equipped with standardized tools to bend drive eyelets on conductors.
On-site contractor personnel may be tasked with a variety of different construction-related functions. The above techniques to facilitate duct extractions may comprise having such personnel prepare the wire heads in one or less packages. Accordingly, such personnel may possess varying amounts of experience in preparing such trailing heads. However, the service center staff described above can specialize in various tasks involved with building integrated cabling solutions. Therefore, integrated cabling solutions built by such service center personnel can work more consistently than skid heads built on site, for example, by contractor personnel.
The subject matter described above is provided by way of illustration only and should not be construed as limiting. Different modifications and changes may be made to the subject matter described herein without departing from the example modalities and illustrated and described applications, and without departing from the real spirit and scope of the subject matter claimed, which establishes claims.
IMPI βπ INSTirare M £ XK »jie | DI LA l'ROriEDAfiF
INDUSTRIAL
<img file="MX338239B_D0091.tif" />
<img file="MX338239B_D0092.tif" />
Contents78
122 sheets
Sheet 1 Sheet 2 Sheet 3 Sheet 4 Sheet 5 Sheet 6 Sheet 7 Sheet 8 Sheet 9 Sheet 10 Sheet 11 Sheet 12 Sheet 13 Sheet 14 Sheet 15 Sheet 16 Sheet 17 Sheet 18 Sheet 19 Sheet 20 Sheet 21 Sheet 22 Sheet 23 Sheet 24 Sheet 25 Sheet 26 Sheet 27 Sheet 28 Sheet 29 Sheet 30 Sheet 31 Sheet 32 Sheet 33 Sheet 34 Sheet 35 Sheet 36 Sheet 37 Sheet 38 Sheet 39 Sheet 40 Sheet 41 Sheet 42 Sheet 43 Sheet 44 Sheet 45 Sheet 46 Sheet 47 Sheet 48 Sheet 49 Sheet 50 Sheet 51 Sheet 52 Sheet 53 Sheet 54 Sheet 55 Sheet 56 Sheet 57 Sheet 58 Sheet 59 Sheet 60 Sheet 61 Sheet 62 Sheet 63 Sheet 64 Sheet 65 Sheet 66 Sheet 67 Sheet 68 Sheet 69 Sheet 70 Sheet 71 Sheet 72 Sheet 73 Sheet 74 Sheet 75 Sheet 76 Sheet 77 Sheet 78 Sheet 79 Sheet 80 Sheet 81 Sheet 82 Sheet 83 Sheet 84 Sheet 85 Sheet 86 Sheet 87 Sheet 88 Sheet 89 Sheet 90 Sheet 91 Sheet 92 Sheet 93 Sheet 94 Sheet 95 Sheet 96 Sheet 97 Sheet 98 Sheet 99 Sheet 100 Sheet 101 Sheet 102 Sheet 103 Sheet 104 Sheet 105 Sheet 106 Sheet 107 Sheet 108 Sheet 109 Sheet 110 Sheet 111 Sheet 112 Sheet 113 Sheet 114 Sheet 115 Sheet 116 Sheet 117 Sheet 118 Sheet 119 Sheet 120 Sheet 121 Sheet 122
135 members in 21 offices
Priority claims11
| Document | Office | Kind | Date |
|---|---|---|---|
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| 24491909 | United States of America | P | |
| 12726992 | United States of America | – | |
| 72699210 | United States of America | A | |
| 2010028113 | United States of America | W |
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| US2016012945A1 | United States of America | A1 | |
| MX338239BThis record | Mexico | B | |
| IL187574A | Israel | A | |
| US2016196898A1 | United States of America | A1 | |
| US9431152B2 | United States of America | B2 | |
| US9484722B2 | United States of America | B2 | |
| US2017243674A1 | United States of America | A1 | |
| US9780542B2 | United States of America | B2 | |
| US9802785B2 | United States of America | B2 | |
| MX352124B | Mexico | B | |
| US9864381B2 | United States of America | B2 | |
| US2018026428A1 | United States of America | A1 | |
| US2018129228A1 | United States of America | A1 | |
| US10003179B2 | United States of America | B2 |
Numbers
- Publication
- 338239
- Application
- 2013009816
Titles2
- Spanish
- SISTEMAS INTEGRADOS PARA INSTALACIONES DE ALAMBRE Y CABLE.
- English
- INTEGRATED SYSTEMS FOR WIRE AND CABLE INSTALLATIONS.
Classification
- CPC, 7
- H02G1/081
- B65H55/005
- H02G15/046
- Y10T29/49181
- Y10T29/49826
- G05D7/0605
- B65H54/00
- IPC, 1
- H02G1 08