Integrated systems for wire and cable installations.
Abstract
Trailing eyelets are provided with integrated wiring systems suitable for installing conductors or cables. The pull eyelets may include portions of the body that define interior cavities that are sized to latch tightly with the portions outside of the conductors or cables. The portions of the body are sized to be bent so that they can be deformed on the portions outside the conductors or cables. The pull eyelets may also include portions of the head attached to the portions of the body, the head portions defining openings to receive a force element for installing the conductors or wires. These openings connect the inner cavities with the outer ones of the trailing eyelets.

Term
3.5 yearsleft in the term
Expires 22 March 2030.
- Priority
- Filed
- Granted
- Today
- Expires
14 claims: 4 independent, 10 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 5 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, el primer indicio y el segundo indicio que indican un orden 10 secuencia! para aplicar una pluralidad de dobleces a la porción de cuerpo, en donde el primer indicio indica que un primer doblez de la pluralidad de dobleces que será aplicado a la primera posición antes de que un segundo doblez de la pluralidad de dobleces es aplicado a la segunda posición, y en 15 donde el segundo indicio indica que el segundo doblez de la pluralidad de dobleces que será aplicado a la segunda posición después de que el primer doblez de la pluralidad de dobleces es aplicado a la primera posición;colocar al menos una porción del conductor adentro d I 20 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 25 porción de cuerpo del ojal de arrastre para doblar el ojal de INDU5TPJAL arrastre sobre el conductor.
- 2El método tal y como se describe en 19 MTvTnSTcaciS’n 1, en donde la porción del cuerpo del ojal de arrastre está dimensionada para ser doblada solamente sobre una superficie exterior del conductor.
- 3El método tal y como se describe en la reivindicación 1, en donde el conductor comprende una conductor aislado y la porción del cuerpo del ojal de arrastre es dimensionada para ser doblada en 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 aplicado a la primera posición de la porción de cuerpo del ojal de arrastre y el segundo doblez aplicado a la segunda posición de la porción de cuerpo del ojal de arrastre tienen una alineación de rotación diferente en relación uno con el otro.
- 5El método tal y como se describe en la reivindicación 1, en donde aplicar el primer indicio de la porción de cuerpo del ojal de arrastre en la primera posición comprende aplicar el primer indicio de modo que el primer indicio tiene una primera alineación de rotación sobre la porción de cuerpo, en donde aplicar el segundo indicio a la porción de cuerpo del ojal de arrastre en la segunda posición comprende aplicar el segundo indicio de modo que el segundo indicio tiene una segunda alineación de rotación sobre la porción de cuerpo, y en donde la primera alineación de rotación del primer indicio sobre la porción de cuerpo es diferente de la segunda alineación de rotación del segundo indicio sobre la porción de cuerpo.
- 6El método tal y como se describe en la reivindicación 5, en donde la primera alineación de rotación sobre la porción de cuerpo del primer indicio y la segunda alineación de rotación sobre la porción de cuerpo del segundo indicio proporcionan una guía para alinear de manera rotacional una herramienta de doblado en la primera posición sobre la porción de cuerpo para aplicar el primer doblez de la pluralidad de dobleces a la porción de cuerpo y para alinear de manera rotacional la herramienta de doblado en la segunda posición sobre la porción de cuerpo para aplicar el segundo doblez de la pluralidad de dobleces a la porción de cuerpo, respectivamente.
- 7Un método para preparar una cabeza de arrastre que incluye una pluralidad de ojales de arrastre y una pluralidad de conductores para instalación, el método que comprende:aplicar un primer indicio a una porción de cuerpo de un ojal de arrastre de la pluralidad de ojales 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, el primer indicio y el segundo indicio que indican un orden secuencia! para aplicar una pluralidad de dobleces a la porción de cuerpo, en donde el primer indicio indica que un primer doblez de la pluralidad de dobleces que será aplicado a la primera posición antes de que un segundo doblez de la pluralidad de dobleces es aplicado a la segunda posición, y en donde el segundo indicio indica que el segundo doblez de la pluralidad de dobleces que será aplicado a la segunda posición después de que el primer doblez de la pluralidad de dobleces es aplicado a la primera posición;adherir el ojal de arrastre a un elemento de arrastre respectivo;colocar al menos una porción de un conductor respectivo de la pluralidad de conductores 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 arrastre para doblar el ojal de arrastre sobre el conductor respectivo.
- 8El método tal y como se describe en la reivindicación 7, caracterizado porque comprende además desforrar al menos una porción de aislamiento del conductor respectivo para exponer un conductor de metal sin revestimiento respectivo dentro del conductor respectivo.
- 9El método tal y como se describe en la reivindicación 8, en donde el ojal de arrastre es doblado sobre el conductor de metal sin revestimiento.
- 10El método tal y como se describe en la reivindicación 7, en donde el primer doblez aplicado a la primera posición de la porción de cuerpo del ojal de arrastre y el segundo doblez aplicado a la segunda posición de la porción de cuerpo del ojal de arrastre tienen una alineación de rotación diferente en relación uno al otro.
- 11El método tal y como se describe en la reivindicación 7, que comprende además adherir al menos un ojal de arrastre adicional al elemento de arrastre respectivo.
- 12El método tal y como se describe en la reivindicación 7, que comprende además extraer la cabeza de arrastre a través de un conducto para instalar la pluralidad de conductores.
- 13El método tal y como se describe en la reivindicación 7, en donde aplicar el primer indicio a la porción de cuerpo del ojal de arrastre en la primera posición comprende aplicar el primer indicio de modo que el primer indicio tiene una primera alineación de rotación sobre la porción de cuerpo, en donde aplicar el segundo indicio a la porción de cuerpo del ojal de arrastre en la segunda posición comprende aplicar el segundo indicio de modo que el segundo indicio tiene una segunda alineación de rotación sobre la porción de cuerpo, y en donde la primera alineación de rotación del primer indicio sobre la porción de cuerpo es diferente de la segunda alineación de rotación del segundo indicio sobre la porción de cuerpo.
- 14El método tal y como se describe en la reivindicación 13, en donde la primera alineación de rotación sobre la porción de cuerpo del primer indicio y la segunda alineación de rotación 5 sobre la porción de cuerpo del segundo indicio proporcionan una guía para alinear de manera rotacional una herramienta de doblado en la primera posición sobre la porción de cuerpo para aplicar el primer doblez de la pluralidad de dobleces a la porción de cuerpo y para alinear de manera rotacional la 10 herramienta de doblado en la segunda posición sobre la porción de cuerpo para aplicar el segundo doblez de la pluralidad de dobleces a la porción de cuerpo, respectivamente. 100 IMPI INSTITUTO MEXICANO de la prohedau INDUSTRIAL
Independent claims14
443 paragraphs in 46 sections, as filed
(54) Title: INTEGRATED SYSTEMS FOR WIRE AND CABLE INSTALLATIONS.
(54) Title: INTEGRATED SYSTEMS FOR WIRE AND CABLE INSTALLATIONS.
(57) Summary
Drag grommets are provided with integrated wiring systems suitable for installing conductors or cables. The drive grommets may include portions of the body that define interior cavities that are dimensioned to closely engage the outer portions of the conductors or cables. The body portions are dimensioned to be bent so that they can be deformed over the portions outside of the conductors or cables. The drive grommets can also include head portions attached to the body portions, the head portions defining openings to receive a force element to install the conductors or cables. These openings communicate the interior cavities with the exterior cavities of the towing eyelets.
(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 apertures for receiving a strength member for stalling the conductors or cables. These apertures place the interior cavities in communication with the exteriors of the pulling eyes.
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PATENT TITLE No. 352124
Holders): SOUTHWIRE COMPANY
Address: One Southwire Drive, Carrollton, Georgia, 30119-4400, USA
D nomination: INTEGRATED SYSTEMS FOR WIRE AND CABLE INSTALLATIONS.
CIP:
H02G1 / 08; G05I
Classification!
CPC:
H02G4 /
Inventor (s)
PHILIP ^ AS ^ E; ALLAN W.
Ex date
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pOPER; DAVID MERCIER;
iento f »2» f
Industrial ficina iustrial. (DOF 12/15/1999, amended 02/04/2000, 07/29/2004, non-extendable article 19/06, told to IdSSerechos.
Numeieu, MX / a / 2016/004494
Country:
Validity: Date of Ve
The reference patent
In accordance with the article from the date of presentation and of the itud ii
Who subscribes this title it (Official Gazette of the Federation 01/25/2006, 05/06/2009, 06/01/2010, 06/18 Regulation of the Mexican Institute of articles 1<sup>or</sup>, 3<sup>or</sup>, 4<sup>or</sup>, 5 “section V subsection a), 16 12/27/1999, amended on 10/10/2002, 07/29/2004,
<img file="MX352124B_D0003.tif" />
Ib day this f ^ hs ^^ iel 0 7/0 '
Deputy Generals, Coordinator, Divisional Directors, Departmental Titles and other subordinates of the Mexican Institute of 08/04/2004 and 09/13/2007).
IntorpAcionali
010 htd number:
Law of
Industrial Property Law / 1999, 01/26/2004, 06/16/2005, clause a), 4th and 12th sections I and III of W02, 07/15/2004, 07/28/2004 and 7 / 09/2007);
o Mexican Industrial Property (DOF agreement that delegates powers to Regional Directors, Divisional Deputy Directors. Coordinators
This document is signed with an advanced electronic signature (FIEL), based on articles 7 BIS 2 of the Industrial Property Law; 3 of its Regulations, and 1 fraction III, 2 fraction V, 26 BIS and 26 TER of the Agreement establishing the guidelines for the use of the Payment and Electronic Services Portal (PASE) of the Mexican Institute of Industrial Property, in the procedures indicated.
THE DIVISIONAL DIRECTOR OF PATENTS
NAHANNY CANAL REYES
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Amz56u0pS + 9vlN5o6yEhebZ6Ckc / pwlrBEZ72gvVUB8ZtxMVpcN1FbG / RÍXZqBv + FuXQ8qUb6mZh8lxtHE4UI + 8M 4ruYWO4TcbTLXIWA8zkPwF1RohtwU1rYvKX1WadgJmkniBTIDeDJYwvzgZ8L7WaXGgzjREufn4T3keSSBbPrN78Nom 6 / 3uDxlvstlOSaKho86XFiyjpAt3FomJ / fVefP4kyjVPH1VISDOXZsDQomEMDwQRkDX475Gw == * Additional information on the back
Arenal No. 550. Floor 1, Pueblo Santa María Tepepan, Xochimilco. 16020. Mexico City.
(55) 53340700 www.gob.mx/impi
IIIIHIII
MX / 2017/91107
<img file="MX352124B_D0005.tif" />
IMPI
MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY
INTEGRATED SYSTEMS FOR INSTALLATIONS OF
<img file="MX352124B_D0006.tif" />
WIRE AND CABLE
Cross Reference with Related Requests
This application claims the benefit on the
North American Provisional Patent Application Serial No. 61 / 162,589 filed March 23, 2009, entitled "Integrated Systems for Wire and Cable Installations"; North American Provisional Patent Application Serial No. 61 / 174,210 filed April 30, 2009, entitled "Integrated Systems for Wire and Cable Installations"; North American Provisional Patent Application Serial No. 61 / 221,216 filed June 29, 2009, titled “Integrated Systems for Wire and Cable Installations”; the Provisional Patent Application
North American Serial No. 61 / 244,919 filed on September 23, 2009, entitled “Layer Wound and Multiple Parallel Layer Spools on a Single Reel”, and North American Utility Patent Application Serial No. 12 / 726,992 filed on March 18, 2010, entitled "Integrated Systems that Facilitate Wire and Cable Installations", each of which is expressly incorporated in its entirety into this description by reference. This application also incorporates by reference the total contents issued in US Patent No. 7,557,301, filed as the
North American Patent Application Serial No. 12 / 017,222 at
<img file="MX352124B_D0007.tif" />
January 21, 2008, and entitled "Electric Cable Manufacturing Method that Has a Reduced Required Strength for Installation", as if the contents of the same were established literally in this description. Furthermore, this patent application incorporates by reference the following, the contents of which are set forth literally in the present description: North American Provisional Patent Application Serial No. 60 / 587,584; and North American Provisional Patent Application Series Nos. 11 / 858,766 and 11 / 675,441.
Brief Description of Drawings
Figure 1 is a combined block and flow diagram illustrating implementations in which wire and cable manufacturers, distributors, and contractors can interact in relationship to create integrated wire and cable facility delivery systems.
Figure 2 is a block diagram that provides additional details related to a configuration and I order a tool that can make it easier to create and deliver embedded systems for wire and cable installations.
Figure 3 is a flow chart illustrating additional details related to the inputs and outputs of the configuration and tooling shown in Figure 2.
Figure 4 is a block diagram illustrating various components that can be included in systems
IMPI
MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY
<img file="MX352124B_D0008.tif" />
Integrated for wire and cable installations.
Figure 5 is a diagram illustrating multiple cables or wires that can be loaded in parallel on a single spool to be delivered in parallel during installation to a contractor job site.
Figure 6 is a diagram illustrating the delivery systems that can be included in some cases of the integrated systems for wire and cable installations.
Figure 7 is a diagram illustrating an example of a pull eye that can be attached to the terminal end of wires or cables provided as part of integrated systems for wire and cable installations.
Figure 8 is a diagram illustrating additional examples of the towing eyelet, as well as illustrating installation scenarios in which a number of different towing eyes are attached to the terminal ends of the respective cables, connecting the towing straps, and linked to a common point of attachment to drag them through a conduit.
Figure 9 is a diagram illustrating a snap hook shown in Figure 8, along with a protective cover that can be installed over a drag head to reduce friction encountered by the drag head when a wire extension or determined cable
<img file="MX352124B_D0009.tif" />
it is dragged through the conduit.
Figure 10 is a diagram illustrating an alternate assembled construction of a drag head assembly.
Figure 11 is a diagram illustrating a towing eye and towing cable in greater detail.
Figure 12 is a diagram illustrating examples of a spool 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 on the trailing 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 drive eyelets.
Figure 17 is a diagram illustrating the examples of non-threaded drive eyes.
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="MX352124B_D0010.tif" />
IMPI
MEXICAN INSTITUTE; · Βί> ρ »£ ΠΑ0 additional towing eyelets.
FIG. 20 is a diagram illustrating the pull eyelets shown in FIG. 19, with head portions and body portions assembled.
Figure 21 is a diagram illustrating the drive heads that may include any of the drive eyelets shown in Figure 20.
Figure 22 is a diagram illustrating additional detail of the pull eyelets as the pull eyelets pass through the bend.
Figure 23 is a diagram illustrating outside diameters, inside diameters, and torque thicknesses d suitable for implementing the drive eyelets described herein.
Figure 24 is a diagram illustrating the rotation sequences and / or orientations for making successive bends along the pull grommets, as indicated by the color-coded areas along the pull grommets.
Figure 25 AB is a diagram illustrating the rotation sequences and / or orientations for making successive bends along the pull eyelets, indicated by dashes or other indications applied to the pull eyelets.
Figure 26 is a diagram illustrating details of preparing a shielded cable for the installation of the drive head assemblies.
Figure 27 is a flow chart showing<sup>N</sup>to<sup>us</sup>m ^ all · to make multilayer parallels in a δδΐδ ¿arrété, agree with the modalities described here; Y
Figures 28 to 31 are diagrams showing aspects of the parallels of multiple layers on a single reel, according to embodiments described herein.
Detailed description of the invention
The following detailed description is focused on methods, systems, and apparatus for utilizing the integrated systems for wire and cable installations. This description provides several 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 may include any combinations of these components, including combinations other than those shown in this description.
Figure 1 illustrates implementations, generally indicated by the numeral 100, in which any number of wire and cable manufacturers 102, wire and cable distributors 104, and contractors 106 may interact regarding the creation and delivery of integrated systems for wire and cable installations. As shown in the
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INSTITUTE I.IXICANU Γΐ LA KlOnFDAD V * »H— \ figure 1, a manufacturer of deterrninaSo wire and cable<sup>1K</sup>T02 and a specific contractor 106 can be comüTlIcat<sup>1</sup> ΰ Interact between them, to establish different parameters related to one or more wire extractions that are going to be carried out at the job site where the contractor 106 is working. Figure 1 indicates these interactions generally at point 108.
Interactions 108 may represent contractor 106 providing specifications related to wire pulls. Interactions 108 may also represent manufacturer 102 processing these specifications to design and provide an integrated system that is customized to perform one or more wire pulls at the contractor's site.
Figure 1 generally depicts at items 110A and 110B (collectively, embedded systems 110) embedded systems for wire and cable installations, as provided by manufacturer 102. In some, but not necessarily all, embedded 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
For different purposes, distributors 104 may or may not add or augment the integrated systems 110 prior to delivering them to contractors 106. Therefore, the integrated systems 110A may or may not be the same as the integrated systems 110B in different deployment scenarios.
In some cases, embedded systems 110 may go directly from manufacturer 102 to contractor 106. Figure 1 depicts this scenario generally at point 110C.
Figure 2 illustrates additional details, generally numbered 200, that relate to a set up 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 the possible implementations, Figure 2 carries the manufacturer 102 and the contractor 106, who can interact as they were carried in point 108.
Returning to Figure 2 in more detail, the manufacturer 102 (or a third party acting on behalf of the 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 I
INSTITUID MEXICANO DE LA PROPIEDA »INDUSTRIAL manufacturer 102, distributors, and / or contractors 106 through adequate communication networks (not shown in figure 2). For example, the manufacturer 102 and the contractor 106 may carry out at least portions of the interactions 108 through the server systems 202.
Returning to server systems 202 in greater 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 may connect to one or more bus systems 206 selected for compatibility with processors 204.
Server systems 202 may also include one or more instances of computer-readable storage media or media 208, which are connected to bus systems 206. Bus systems 206 may enable processors 202 to read code and / or data for / d the computer-readable storage media 208. Media 208 may represent apparatus 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 can include memory components, either classified as RAM, ROM, snapshot, or other types, and can also represent disk drives.
<img file="MX352124B_D0012.tif" />
Lasted.
Storage means 208 may include one or more instruction modules which, when loaded and executed in processor 204, cause server systems 202 to perform various techniques related to provisioning embedded systems for wire and cable installations. As detailed throughout the present description, these instruction modules may also provide various tools or techniques by which server systems 202 can be provided with embedded systems 110, using the components and flows explained in greater detail throughout. present description. For example, storage means 208 may include one or more software modules that implement the configuration and ordering of tools or utilities 210. These configurations and ordering of tools 210 generally represent software programmed or configured to perform various functions distributed herein to systems. server 202. For example, contractor 106 and / or dealers can access tool setup and ordering 210, once they have registered with server systems 202.
Referring to the configuration and ordering of tools 210 in greater detail, these tools can provide suitable graphical user interfaces (Uls) and
IMPI®
KSTITUTO MEXICANO DI LA PROPERTY related process flows through the 'o'úSté's the - manufacturer 102 can obtain different parameters related to one or more wire / cable extractions to be performed at a contractor job site. Figure 2 illustrates several non-limiting examples of said parameters, generally indicated by number 212.
Returning to parameters 212 in greater detail, these parameters 212 may include a representation of the job or site identifier where the scheduled wire / cable pulls are scheduled to occur. Figure 2 indicates the job or site identifier numbered 212A.
At a particular job or site indicated by identifier 212A, one or more different wire / cable pulls or runs can be scheduled and provisioned using the 210 tool setup and ordering. Figure 2 indicates a representative run identifier at the point 212B, but it has been observed that the configuration and ordering of tools can provide any number of wire / cable runs for a given job site.
For a given wire / cable run or pull, the configuration and arrangement of tools 210 may meet different parameters. For example, Figure 2 indicates a length of the extraction in the
<img file="MX352124B_D0013.tif" />
IMPI
INSTITUTE MEXICANO DE LA PROPERTY INDUSTRIAL point 2120, with the extraction that generally comprises the extraction of wire or cable in an entire run of the electrical conduit or that comprises the run of shielded cable, such as an armored connection device cable (“MC ”). 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 comprising shielded cables do not require a conduit 10 through which the shielded cables need to be drawn since the shield of the shielded cables acts as the conduit. The length parameters of the 212C extraction 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 that comprise a conduit. More specifically, the conduit 212D configuration parameters may represent the diameter of the conduit through which the wire or cable is to be drawn. This duct size or diameter can be expressed and represented using any suitable nomenclature known to those of skill in the art.
In addition, the conduit configuration parameters 212D may indicate a general layout or configuration 25 for a given conduit run. For example, the tNSTi Γ. 3
Dt L. '-O conduit configuration parameters 212D can indicate whether the conduit run includes any kinks. For conduit runs that include kinks, the 212D conduit setup parameters can indicate how many and what types of kinks occur, and the like. The configuration parameters of conduit 212D may indicate whether the conduit run includes any intermediate extractions or junction boxes, and the location of any such boxes. Finally, the configuration parameters of 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 212E. The parameters of the 212E conductor can indicate how many conductors (if 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 sizes and types of conductor can be expressed and represented using any suitable nomenclature known to those of skill in the art. Configuration parameters 212 can also specify whether a driver
IMPI INSTITUTE MEXICO DE LA MOFIEDAD industrial determined is made of copper, aluminum, or other conductive material.
Configuration parameters 212 may include parameters that represent desired insulation colors for particular conductors, as generally indicated in item 212F. As understood by those skilled in the art, certain colors selected for a given circuit can carry 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-colored conductors generally function as circuit grounds. In high voltage scenarios, brown, orange, or yellow conductors can indicate “loaded” circuit functions, while gray conductors can indicate neutral circuits. In low-voltage scenarios, black, red, or blue conductors can indicate “loaded” circuit functions, while 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 of skill 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 fastape to
<img file="MX352124B_D0014.tif" />
These different drivers can be time consuming and prone to errors. For example, crossing the phases of the electrical 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 may indicate whether the wires or cables are to be equipped with grommets, as generally depicted in item 212G. These grommets are described in more detail later. In an overhaul, manufacturers 102 or distributors 104 may install, at their facilities, towing eyelets at the leading end of the wires that are delivered to contractors 106. These grommets make it easy to attach drag cords to the ends of the wires, for dragging in and through the conduit. Because the 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 setting up 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 (s). In I
<img file="MX352124B_D0015.tif" />
In the case where the wire is a multi-stranded conductor, at least some of the outer strands can be unwound and pulled back, and the inner strands cut off. At the same time, the outer threads can be attached to, or twisted around, a tow rope in some convenient way to form a tow head. The entire connection can be wrapped with adhesive tape (eg duct tape or electrical tape) in addition to secure the connection between the tow rope and the wire.
In these prior techniques for creating the drive heads, however, the pulling tension is carried only by a subset of the lead wires, that is, the wires that are not cut when the drive heads are created. Because only a subset of conductor wires are carriers of pulling stress, the maximum pulling stress that a given drive head can withstand before failing can be reduced. However, as described in more detail below, the grommets are attached to all conductors that have wires, so that the pulling tension is transferred to all the wires with wires rather than just a subset of the wires. themselves. Consequently, implementations of integrated systems 110 incorporating the drag eyelets can achieve higher maximum drag stresses. Furthermore, the drag heads incorporating the drag eyelets can be shorter in length and more flexible than conventional drag heads, and thus can travel through the bends in the conduit runs more easily without wear or bonding. .
Generally, extractions through the conduits can experience kinks ranging from any angle up to or possibly more than about 90 °. The pull eyelets described herein can be of any suitable length to clear such kinks without binding or binding during pulls.
Using the draw eyes attached to the ends of the wires, the draw cord can be attached to the wires, while reducing the labor time and cost associated with prior techniques to form the drag head. In general, the 212F setup parameters associated with a particular wire or conductor can indicate whether that particular wire or conductor will be equipped with a pull eye. For example, for a shielded cable run, all of the conductors that make up the shielded cable can be fitted with a drag eye, or a portion of the conductors that make up the shielded cable can be fitted with a drag eye while the remaining conductors They are not equipped with a towing eyelet. In cases where multiple types of towing eyelets are available, the 212F configuration parameters can identify which type of towing eyelet is to be adhWffo '<sup>L</sup>am determined wire or conductor. - Parameters 212 may also include shield 212H size / configuration parameters for runs that comprise shielded cables, such as MC cable. The shield size / configuration parameters 212H can indicate the size of the shield that will be associated with the shielded cable as well as the type of material of the shield itself that is to be constructed of, such as metal. As is known to those skilled in the art, the size of the shield to be associated with the shielded cable can be determined based on the number and size of conductors to be included within the shield as provided by the conductor parameters 212E. Shield size can be expressed and represented using any suitable nomenclature known to those of skill in the art. Additionally, the Shield Size / Configuration parameter 212H can indicate the general layout or configuration of a given shielded cable run.
Figure 3 illustrates additional details, generally indicated by the numeral 300, related to the inputs and outputs of the configuration and ordering of tools 210 shown in Figure 2. For example, the manufacturer 102 may receive a particular order 302 for a contractor. determined 106, with this command 302 specify one or more of the different configuration parameters 212 shown in figure 2. At the same time, the configuration and ordering of tools 210 can process these configuration parameters 212, and calculate the extraction stresses 304 expected 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 the different conductors, and other factors important in computing the Expected pull stress for that given run.
The tool configuration and arrangement 210 may also comprise the appropriate extraction equipment for a given run, based at least in part on the extraction stress 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 the pull-out stress 304 is calculated as a maximum of 2,000 pounds (907.18 kg), the tool configuration and arrangement 210 may recommend equipment capable of generating at most 2,000 pounds (907.18 kg) of force. In this example, provide the equipment capable of generating any force greater than 2,000 pounds (907.18 kg)
DE LA PPOMOAL · tw would be an unnecessary expense. Figure 3 indicates on the 3W a representation of the dragging equipment for a specific extraction. If a given order 302 includes different multiple pulls with different calculated stresses 304, recommendations 306 may suggest a tie that has sufficient capacity to handle the largest calculated stress 304.
Figure 4 illustrates various components, generally indicated by the numeral 400, that may be included in integrated systems 110 for wire and cable installations. In illustrating and describing these example components, it should be noted that implementations of this description may include at least one of these components, but may not necessarily include all of these components.
The integrated system 110 can include any number of insulated conductors, generally represented by the number 402. These conductors can be configured in any number of different ways, to reduce the force involved with the installation of the insulated conductors through the conduits. For example, conductor insulation can be pre-lubricated during manufacturing, as distinguished by having lubricant applied to the conductors when preparing for extraction at the job site. The different issued patents, provisional applications, and non-provisional patent applications here
INSTITUTE MEXl · the rKVrltL-AiJ V c— .. incorporated by reference above préTpWoíom'Kr several non-limiting examples of pre-lubricated floated conductors 402. However, it has been noted that implementations of this description may include other examples of pre-lubricated insulated conductors 402 without departing from the scope and spirit of the present disclosure.
Integrated systems 110 may include any number of color-coded conductors, generally depicted at point 404. For example, recalling the previous description of Figure 2, the configuration and ordering of tools 210 may enable contractor 106 to specify the colors. of conductor 212F for a given order. As explained above, different colors of conductors can carry particular electrical functions, as understood by those skilled in the art.
In additional embodiments, the embedded systems 110 may include shielded cables, generally represented by the numeral 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 given implementation of the integrated system 110, since these conductors are previously lubricated and / or
MEXICAN INSTITUTE
Color-coded INDUSTRIAL RUBBING can be delivered so that multiple different conductors are provided to deliver on a single specified reel, usually indicated by 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. Consequently, the integrated system 110 can enable all three conductors to be delivered or supplied from the same reel in parallel with each other.
Additionally, 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 (for example, point 212C in Figure 2 ). For example, service centers operated by manufacturers can load and supply these reels as a service to contractors.
In some deployment scenarios, the reels can be compartmentalized, to contain different colors of conductors in respective compartments. In other deployment scenarios, the reels may include a single compartment that contains all the different conductor colors.
In contrast, the prior techniques can fill this determined order by delivering three different reels, each of which would contain one of the different conductors. In these prior techniques, the three different conductors would be supplied simultaneously from the three different spools, further complicating the installation of the conductors. The following drawings illustrate and provide additional details regarding 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 point 408. Generally, using the above techniques, reels 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 consolidated delivered system 408, as illustrated in greater detail below, can dispatch and facilitate the preparation of the delivered spools, and can reduce or eliminate manual positioning and leveling of these delivered spools. For example, forklifts and other machinery can maneuver Consolidated Delivery Systems 408 as a single unit in position. Once the 408 delivery system is in place, the iMaa-
<img file="MX352124B_D0016.tif" />
Workers can adjust the system as appropriate to deliver the conductors within the conduit.
Integrated systems 110 can also include delivered shielded wires, conductors, or cables that have grommets installed at their ends. Figure 4 indicates these towing eyelets generally at point 410, and subsequent drawings provide additional detail regarding the towing eyelets.
Integrated systems 110 can also deliver specialized drag mats delivered, generally indicated by the number 412. For example, these drag cords can be coated or impregnated with specialized low-friction compounds, similar to compounds that impregnate previously lubricated insulated conductors. 402. In prior techniques for pulling conductors through conduit, contact between the string and conduit can contribute considerable friction to the overall pull, thereby increasing the pull tension. However, by reducing friction between the draw cord 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 conduit constructed of polyvinyl chloride (PVC), resulting in burrs, nicks, and debris left in the conduit. At the same time, this damage to<sup>25</sup> IMPI
MEXICAN INSTITUTE
OF INDUSTRIAL FROHEDNESS V% e®S & ífiL INDUSTRIAL conduit structure can damage conductors, and such insulation when wires are pulled into conduit. However, the specialized tow rope 412 can be constructed of nylon, and impregnated with a low friction compound.
A variable speed tie 414 can also be provided as part of the integrated systems 110. Variable speed tie 414 may include a drum to which the pull 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 fitted 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 (e.g., 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 416 covers 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
<img file="MX352124B_D0017.tif" />
<img file="MX352124B_D0018.tif" />
<img file="MX352124B_D0019.tif" />
INSTITUTE ; : X · Ca mo DE LA ??. O? '»FDAD INDUSTRIAL conductors are extracted. As described above with respect to the insulated conductors 402, the protective covering 416 can contribute, along with other factors, to reducing the force comprised with the drawing of the drive head 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 removal at the job site.
Figure 5 illustrates multiple conductors 402 loaded in parallel on a single spool 406 to be delivered in parallel during installation at a contractor job site. For ease of reference, but not to limit the possible implementations, Figure 5 carries three examples of these conductors, respectively marked with the numbers 402A, 402B, and 402N. However, the implementation of the present disclosure may include any number of conductors 402 delivered on a single spool 406. In a further embodiment, multiple parallels, each consisting of one or more conductors 402, may be wound on spool 406 at layers, on top of the other, as will be described later with respect to Figures 27 to 31. Each parallel on reel 406 can then be delivered separately for multiple and separate independent wire / cable pulls.
In example implementation scenarios, leads 402 can be of any convenient size or type. In different possible implementations, the different conductors 402A through 402N may or may not be of the same type or size. For example, conductors 402 that serve as circuit neutrals can be sized smaller, relative to conductors 402 that serve as higher voltage supplies.
Conductors 402 may include 502A through 502N insulation (collectively, 502 insulation) of any suitable thickness, composition, or type. In addition, the insulation 502 can be color-coded as described above in connection with the color-coded conductors 404 of Figure 4. In some scenarios, the insulation 502 may also be marked with the length in feet by means of markers, to identify the amount of wire that has been delivered from the spool 406 at any given time.
Also as described above, insulation 502 may be impregnated or coated with a suitable lubricant as part of the manufacturing process for insulation 502, as distinguished from prior techniques in which the lubricant is applied to the exterior of insulation 502 just prior to that conductors 402 are being drawn through the conduit.
<img file="MX352124B_D0020.tif" />
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 from the 504A to the 504N (collectively, the wires 504) from the bottom. The wires 504 can be of any convenient type or size, and can represent solid wires or striated cables, as appropriate in different installations. Additionally, the 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 the numeral 600, of the delivery systems that may be included in some cases of the integrated systems 110 for wire and cable installations. For the sake of convenience of description, but not to limit possible implementations, FIG. 6 may be understood as additionally working on delivery system 408 as shown above and described in FIG. 4. In addition, FIG. 6 is a carrier of the representative carriage 406, of which any number of different conductors from 402A to 402N can be delivered parallel to each other.
Returning to delivery systems 408 in greater detail, these systems 408 may include a base deck 602 of sufficient size and weight to provide
INDUSTRIAL stability for 408 general systems during shipping, administration, and installation on a construction job site. Base platform 602 is generally horizontal in configuration and may include two or more separate base slots 610 or channels so that delivery system 408 can be lifted and carried as a single unit by a standard forklift. Delivery systems 408 may also include risers 604A and 604B (collectively, risers 604). Uprights 604 can rotatably support the ends of spool 406, allowing spool 406 to rotate while delivering conductors 402. Reel 406 may also include flanges 606A and 606B (collectively, flanges 606) to direct the conductors. 402 away from uprights 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 positioned between the platform 602 and the vertical support 604A, while the leveling mechanism 608B is positioned between the platform 602 and the vertical supports 604B. In general, leveling mechanisms 608 can operate to level spool 406. For example, assuming deck 602
MEXICAN INSTITUTE
OF PROPERTY is set above the ground which is not even, the leveling mechanisms 608 can adjust the orientation of the vertical supports 604 in relation to the platform 602, to 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.
Figure 7 illustrates example pull grommets, generally indicated 700, that can 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 peeled off to expose the bare cable or wire 504. It should be understood by those skilled in the art that Conductor 402 may be included within a shield of a shielded cable.
The drive eye 700 may generally include a somewhat elongated body portion 702, which defines an interior cavity 704 along at least part of the body portion 702. At the same time, the bare wire or cable 504 it can be inserted into cavity 704, and body portion 702 can be bent, stamped, or otherwise secured to the wire. In scenarios in which the portion of the
MEXICAN INSTITUTE OF PROPERTY INDUSTRIAL body 702 is bent on wire 504, the dimensions of the body portion 702 (more specifically, the wall thickness) can be selected as appropriate to provide a solid bend. More specifically, the bending strength may be sufficient to withstand the stress that conductor 402 is expected to encounter while it is being drawn into the conduit.
In other implementation scenarios, the lug eyelets 700 may include a wedging mechanism, set screws, or other mechanical mechanisms that operate to secure the body portion 702 to the exposed cable or wire 504.
In implementations in which the pull eyes 700 are bent over the ends of the leads 402, the pull eyes 700 can be manufactured from a material suitable for bending (eg, aluminum, or alloys thereof). In general, the grommets 700 can be manufactured using any suitable processes, including but not limited to, machining from a single piece of warehouse aluminum or other material, as well as forging, casting, molding, or the like. In addition, the towing eye 700 may define an opening 706 through which a towing rope can be secured, as will be described later with respect to FIG. 8.
Compared to previous methods, in which
IMPI
MSXICAN INSTITUTE
DI LA PROHE · * · industrial
<img file="MX352124B_D0021.tif" />
Drag heads are created for electrical conduit runs or shielded cable runs on an ad hoc basis at the job site, 700 drag grommets as installed by manufacturers can provide a more standardized and reliable connection for conductors . Additionally, engineering techniques and quality control processes at the manufacturer's site can overcome the variability and deviations generally experienced with ad hoc installations done at the job site by personnel skilled in the art differently. In some cases, manufacturers may publish specifications indicating the maximum voltage ratings applicable to individual installations of the 700 towing eyelets to the 402 conductors.
In some scenarios, the grommets 700 can double according to the equipment that is suitable for the electrical coupling of conductors 402 to the switchgear or termination equipment. For example, an end 708 of the driver 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 attachment mechanism provided by the distribution device or termination equipment. In this way, the so configured towing eyelets 700 can save the labor time to prepare the
IMPI
INSTITUTE MEXICANO DE LA PROPERTY 402 conductors for connection with distribution devices or termination equipment. -........
Figure 8 illustrates additional examples, generally marked 800, of grommets 700A, 5,700B, and 700C, as adhered respectively to the terminal ends of conductors 402A, 402B, and 402C. In additional embodiments, conductors 402A, 402B, and 402C may be included within a shield of a shielded cable. The towing eyelets 700 are connected respectively to the towing cords 802A, 802B, and 802C (collectively, the towing cords 802). More specifically, connecting rings, carabiners, or forks 804A, 804B, and 804C (collectively, connecting rings 804) can pass through the openings 706 shown in Figure 7, and connect the hauling eyes 700 with the strings. drag 802. However, some implementations of this disclosure may omit connecting rings 804, in favor of passing one end of tow rope 802 through the opening in tow eye 700 and 20 securing the end of the tow rope from she returned to herself. The end of the draw cord 802 can be stamped, bent, or otherwise attached to the main body of the draw cord, forming a circle that secures or captures the draw eye 700. As shown in FIG. 8, the tow ropes 802 may be linked
<img file="MX352124B_D0022.tif" />
to a common hook fastener 806 for pulling through the conduit. '
In the examples shown in Figure 8, the different draw cords 802 have different lengths. These different lengths effectively stagger the different drive eyes 700A, 700B, and 700C within the conduit, thereby reducing the risk that the drive eyes 700 may get stuck within the conduit. In contrast, if it were three towing ropes 802 of the same length, the three towing eyelets 700 could be stacked on top of each other, and if the duct is small enough in diameter, these three stacked towing eyelets 700A, 700B, and 700C can get stuck when pulled through the duct. With regard to shielded cables, the staggering of the different 700 grommets allows the overall diameter of the shielded cables with the grommets attached to the included conduits to be smaller than if different grommets were stacked on top of each other .
Returning to the draw cords 802 in greater detail, as described above, these draw cords 802 can be coated or impregnated with a low friction compound to reduce friction and drag force within the conduit during a pull. This low friction compound may or may not be similar to the lubricant used to pre-lubricate insulated conductors,
<img file="MX352124B_D0023.tif" />
as previously described in FIG. 4 at block 402. In this way, trailing ropes 802 can reduce trailing tension during a given run. Drawstring 802 can be constructed of metallic or non-metallic materials.
Figure 9 illustrates a spring hook 806 and the towed lines 802A, 802B, and 802C hauled in Figure 8. A towing head 902 may include different types of mechanisms 806 (for example, including but not limited to the example of the spring loaded hook shown in figure 9) for attaching the tow ropes 802. Other examples of the attachment mechanisms 806 may include the various grommets and forks illustrated and described herein, suitable for adhering the towing ropes 802 together to draw wires or cables through the conduit. Figure 9 illustrates a protective cover 904 that can be installed over the drive head 902 to reduce friction encountered by the drive head 902 when a given run of wire or cable is drawn through the conduit. Protective cover 904 may define a partition or opening 906 through which at least a portion of snap hook 806 can pass. In example implementations, the protective cover 904 can be constructed of a suitable polymeric material. Protective cover 904 may also help reduce the force involved in directing the drive head 902 through the conduit.
In some implementations, the protective cover 904 may include shrinkable tubing applied over the drive head 902, which can be constructed using any of the techniques provided herein. The shrinkable tubing can provide a low friction liner or cover over at least a portion of the drive head 902. In some cases, shrinkable tubing can contract when heated from an external source, which we refer to as a "hot" shrinkage. In other cases, the tubing is shrinkable without heating, and therefore characterized as shrinkable tubing "cold". This "cold" shrinkable tubing can allow installation personnel to apply the shrinkable tubing to the trailing head 902 without the use of torches or heat sources, which can simplify extractions in the field. Examples of shrinkable tubing, whether characterized as "cold" or otherwise, are commercially available from a variety of suppliers.
Figure 10 illustrates alternative constructions of the assembled drive head assemblies, generally indicated by the numeral 1000. Figure 10 carries examples of insulated conductors, marked respectively.
IMPW
INSTITUTE ΚΑΝΟ
OF THE PRClPi Age V hnnM INDUSTRIAL with 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 shielding of a shielded cable.
Returning to the drive head assemblies 1000 in greater detail, the respective drive eyes 1002A through 1002N (collectively, drive eyes 1002) are shown attached to the corresponding insulated conductors 402A through 402N. It will be seen that the towing eyelets 1002 as shown in Figure 10 provide alternatives to the towing eyelets 700 shown in Figures 7 and 8. The drive eyelets 1002 are shown in greater detail in FIG. 11 and are further explained below. However, in a general view, the trailing eyelets 1002 serve to adhere the insulated conductors 402 to the respective trailing cables 1004A through 1004N (collectively, the trailing cables 1004). The tow 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 the possible implementations, the 1004 tow cables also
MEXICAN INSTITUTE OF PROPERTY INDUSTRIAL may represent drag ropes, force elements, or the like.
The individual tow cables 1004 may include loops, collectively referred to at 1006, which may be formed by means of suitable bending, stamping, or other means of adhesion (collectively indicated at 1008). At the same time, any number of tow cables 1004 can be connected to a fork 1010. The forks 1010 can facilitate the adhesion of the tow cables 1004 to the tow rope 412. The tow rope 412 may include a loop 1012 that facilitates adhesion to the fork 1010. The fork 1010 can 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 withdrawals of the completed head assembly through the conduit. Furthermore, implementations of yoke 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 tow rope 1004 may be attached to one or two of the tow eyelets 1002. For example, tow rope
1004C and 1004N can be the same towing cable, with one end attached to towing eye 1002C and the other end attached to towing eye 1002N. Figure 8 described above illustrates examples in which the 802A through 802C draw cords are attached to the respective single draw eyes 700A through 700C. However, the examples shown in Figure 10 can reduce the number of loops 1006 that pass through yoke 1010, by attaching two tow eyelets 1002 to a given tow cable 1004. Finally, yoke 1010 can be attached to a loop 1012 formed within draw cord 412 (carried for convenience from Figure 4).
Figure 11 illustrates towing eyelets 1002 and towing cables 1004 in greater detail. More specifically, Figure 11 illustrates how the towing cables 1004 can pass through an opening 1102 defined by towing eyelet 1002 , with a member 1104 bent or otherwise adhered over one end 1106 of the trailing cable 1004. As shown in Figure 11, the trailing eye 1002 may define an inner cylindrical cavity 1108. After element 1104 is bent over towing cable 1004, towing eye 1002 can be slid over element 1104 until element 1104 contacts a front inner portion 1110 of towing eye 1002.
In the examples shown in Figure 11, the element
<img file="MX352124B_D0024.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 FIG. 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 the insulated conductors 402 may be stripped to expose some of the length of bare metal cable or wire (for example, 504A through 504N as shown in Figure 5) within of the insulated conductors 402. At the same time, the exposed or stripped length of the bare metal wire passes into the cylindrical cavity 1108.
The trailing eyelet 1102 can then be bent or otherwise adhered to the bare metal wire 504. In this manner, the trailing cables 1004 can be securely attached to the bare metal cables or wires 504, using towing eyelets 1102.
Figure 12 illustrates examples, indicated generally at 1200, of a spool (eg, 406 in the above description) that is loaded with a plurality of conductors (eg, 402A through 402D) having colored insulation. different In the example shown, phase conductors 402A through 402C can have brown, orange, and yellow insulation, signifying the different phases in a given three-phase installation. Additionally, a 402D ground conductor may have green insulation, or it may have insulation of another suitable color to indicate ground. In general, the colors of the particular conductors comprised in a given extraction may be specified by applied electrical codes, local custom or conventions, or other factors. Accordingly, the examples presented here are understood as illustrative, but do not limit the possible implementations of the present description.
In the examples shown in Figure 12, the individual brown, orange, yellow, and green conductors are wound on a single spool. At one time, this single reel can be delivered to a specific job site, and all four conductors can be removed from the single reel. At the job site, installation personnel can remove the four conductors from the single spool. In contrast, prior techniques may comprise delivering four different reels to the job site, each containing the
IMPI <sup>1NST</sup>'^^ e
<img file="MX352124B_D0025.tif" />
four reels a different color conductor. On the site of. work, installation personnel will pull a single conductor simultaneously from the four different reels. However, it should be understood that from this description, such a single reel removal is more convenient than the removal of four different reels simultaneously.
In some implementations, reels 406 can be loaded with multiple conductors in one facility, where the conductors themselves are fabricated. In other implementations, a warehouse or distribution facility can load the multiple conductors on single spools. In general, the multiple different colored conductors can be loaded in combination on the single spools prior to delivering the single spools to job sites, thereby relieving job site personnel from pulling from multiple spools simultaneously.
Also as shown in figure 12, the 1204A through 1204D towing eyelets (collectively 1204 towing eyes) can be attached to the ends of different colored conductors from 402A to 402D and further attached to trailing ropes or cables. suitable from 1202A to 1202D. Generally, the trailing eyelets 1204 secure suitable trailing ropes or cables from 1202A through 1202D to the ends of conductors 402. As described
<img file="MX352124B_D0026.tif" />
Previously, the ends of each conductor 402 may be stripped as appropriate to expose the bare metal wires or cables, with the draw eyes 1204 bent or otherwise secured directly onto the wire.
Figures 13A through 13C illustrate aspects of bending the drive eyelets 1204 to the leads 402. More specifically, Figure 13A shows the drive eyelets 1204 before the compression sleeve has been bent. The pull eyelet 1204 may include areas 1302, depicted darker in Figure 13, that indicate where the compression sleeve can be bent. In implementations of this disclosure, the areas 1302 may be painted, scored, or otherwise visually distinguished from the remainder of the pull eye 1204. The areas 1402 may indicate to personnel where to align the dies or other bending tools when the sleeve is compressed. .
Figure 13B illustrates three successive folds numbered 1304A, 1304B, and 1304C (collectively, 1304 folds). Any suitable bending tool, appropriate in different implementations, can form the folds 1304 in a compression sleeve provided by the pull eye 1204. Comparing the folds 1304A and 1304C with the folds 1304B, it is seen that the implementations of the present description can rotate adjacent folds<sup>44</sup> Ι<sup>ΜΡΙ</sup>^^ industrial ^ * - = -
1304 relative to each other by about 90 °. Rotating the folds 1304 in this manner can promote a more secure overall adhesion between the grommets 1204 and the bare wire or cable of conductor 402. Figure 13C shows an example of successive folds 1304 in approximately the same rotation. It can be seen that the implementations of the present disclosure may employ any number of folds along the compression sleeve of the pull grommets 1204, for example, the three folds are here for illustration only.
The sleeves provided by the grommets 1204 can be compressed using suitable dies. In some implementations, multiple folds can be formed simultaneously with multiple dies. In other implementations, multiple folds can be formed into sequences with a single die. The above examples can apply either multiple folds that share a similar rotational alignment, or multiple folds that are rotated relative to each other. As further illustrated in Figures 13B and 13C, the 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 markings.
<sup>46</sup> IMPI «
MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY
Figure 14 illustrates the conductors of four different colors from 402A to 402D that are bent in the tow ropes or cables from 1202A to 1202D, carried from figure 12. Figure 14 also carries the tow eyelets from 1204A to 1204D which hold the 1202A through 1202D tow cables over the ends of the 402A through 402D conductors.
In the example shown in Figure 14, conductor 402A may represent a ground conductor and conductors 402B through 402D may represent current-carrying phase conductors. Ground conductor 402A may be smaller in gauge or size than the three current-carrying phase conductors 402B through 402D. However, problems can arise when a full bundle of 402A to 402D conductors is drawn through conduit, if a smaller 402A ground conductor carries a disproportionate share of the pull voltage compared to the other conductors. larger phase from 402B to 402D. However, this description provides several methods to reduce the risk that a smaller ground conductor 402A may be damaged by excessive pull voltage.
The upper portion of FIG. 14 provides an expanded view of the trailing eye 1204A that adheres the smaller ground conductor 402A to the trailing cable 1202A. As
<img file="MX352124B_D0027.tif" />
shown, one end of one spring or the other
1402 You can hook an enlarged portion of a MOT that is secured on the end of the tow cable 1202A.
When drive eye 1204A is slid over stop 1404 and spring 1402, an opposite end of spring 1402 engages the front interior of drive eye 1204A.
Once the trailing eye 1204A is secured to the end of the smaller ground conductor 402A, the spring 1402 can serve as a buffer between the trailing cable 1202A and the smaller ground conductor 402A. When the smaller ground conductor 402A is pulled through a conduit, along with the other larger conductors from 402B to 402D, the spring 1402 can dampen any excessive stresses experienced by the smaller ground conductor 402A 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 voltage during pulls. Conductors 402A through 402D can be placed relative to each other in a trailing head so that some of the trailing cables on the
1202A through 1202D are relatively loose or loose, while
<img file="MX352124B_D0028.tif" />
that at least one of these trailing cables from T202A 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. Consequently, the tight tow rope 1202B would initially experience the bulk of the pull tension, while the looser tow rope 1202A, 1202C, and 1202D would experience less pull stress. The voltage would eventually diffuse among all conductors during the extraction process. The smaller ground conductor 402A is shown secured to one of the loose tow cables 1202A. Generally, ground conductor 402A is smaller and smaller in size relative to current-carrying conductors. Accordingly, maintaining some degree of slack in the draw cord 1202A as shown in FIG. 14 can reduce the pull-out deformation carried by the ground conductor 402A.
In other methods, the ends of conductors 402A through 402D may be aligned relative to each other to reduce the risk that a smaller ground conductor 402A may experience damage from excessive stress during pulls. As shown in Figure 16, the ends of conductors 402D and 402C can be separated by distance "L", and the ends of conductors
<img file="MX352124B_D0029.tif" />
Conductors 402C and 402B are also separated by approximately that distance "L". However, the ends of the larger conductor 402B and the smaller ground conductor 402A may be separated by a distance smaller or larger than the distance "L". Figure 14 provides an example in which the distance between the ends of the larger conductor 402B and the smaller ground conductor 402A is separated by approximately half the distance "L". However, other implementations can be to the ends of these two conductors for approximately twice the distance "L".
Figure 14 also illustrates additional examples of a yoke, generally indicated 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 hauling rope 412 (hauled from Figure 4). In some implementations of the present disclosure, yoke 1406 may include two or more different segments that rotate or follow in relation to each other. Therefore, fork 1406 can be characterized as a "pivot" or an "oscillating" 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, the 1406 swivel forks can
<img file="MX352124B_D0030.tif" />
serve to isolate the tow cables 1202 and the tow rope 412 from each other, allowing, for example, the tow cables to rotate axially relative to the tow rope 412, without also exposing the tow rope 412 to those same forces swinging.
Figure 15 illustrates aspects of a variable speed tie 1502 that some implementations of integrated systems for wire and cable installations may provide. Figure 15 also carries a representative cable trailing head at point 902, although the trailing heads shown in any of the figures of the present disclosure may also be suitable for operation of the variable speed tie rod 1 502.
Returning to the variable speed tie rod 1502 in greater detail, the variable speed tie rod 1502 may include a circuit system or software adapted to sense resistance to a running pull, generally represented by a vector 1504. This resistance can be attributable to stress. friction and other forces within the conduit between the conductors being withdrawn, the drag heads, and / or the comprised drag cords. Other factors that may contribute to this strength include elastic bend governed by bend stiffness provided by Young's modulus, inelastic bend
<img file="MX352124B_D0031.tif" />
IMPI
INSTITUTE MEXICANO D! INDUSTRIAL PROPERTY governed by performance stress, surface deformation governed by hardness and resistance to scratches. Young's modulus, yield 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. The 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. Oscillating component can also originate when cables bind while being pulled through angles, as is typical during installation. Cable sagging occurs specifically when there are cables of cable cross-sectional shape 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 may 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. In addition, this resistance can be attributable to obstructions or damage that occur within the conduit (for example, burrs, material
INSTITUTE MEXICANO DE LA PROPERTY INDUSTRIAL strange, physical damage, or similar). As this resistance increases, the tension on the draw lines also generally increases. In this scenario, the variable speed tie 1502 can reduce the speed of the extraction, thereby reducing the tension on the draw lines. In this manner, the variable speed tie rod 1502 can reduce the risk of exposing the trailing ropes to excessive tension and / or damaging the trailing heads.
As a particular 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 time. As the tension remains relatively low or decreases, the variable speed tie 1502 can increase the speed of the extraction, at least until some maximum limit is reached. In this manner, as long as the strength remains relatively low, strut 1502 can increase the speed of extraction and reduce the overall time and expense involved with extraction.
In prior techniques for drawing wires into conduits, lubricant is generally applied to the wires as they are being drawn into and through the conduit. Hence, in these earlier techniques, the speed with which the
<img file="MX352124B_D0032.tif" />
Extraction can be conducted and can be limited by how quickly lubricant can be applied to the wires. Stated differently, placing the lubricant on the wires during extraction can be a bottleneck to performance. However, the various techniques of reduced installation force and components provided as part of the integrated systems 110 can help eliminate the operational bottleneck, allowing the overall removal to be conducted more quickly. Accordingly, the variable speed link 1502 can take advantage of the operating potential offered by the integrated systems 110 by increasing the extraction speed as appropriate in certain circumstances.
Strut 1502 may include appropriate mechanical components, such as an electric drive motor (not shown), which may operate rotary circular drum 1508. For example only, Figure 15 carries pull rope 412 of Figure 4. tow rope 412 may be attached to rope tow head 902, with tow rope 412 secured to, and wound around rotating drum 1508. As drum 1508 rotates, tow rope 412 can be wound onto drum 1508 in the direction indicated by arrow 1510, thereby leading rope tow head 902 through a
<img file="MX352124B_D0033.tif" />
IMPI
INSTITUTE MEXICANO DE LA PKOPIEOAD INDUSTRIAL determined run of the conduit.
Taken as a whole, strut 1502 may be of sufficient weight to withstand the drag forces likely to be encountered when head 902 is withdrawn through a given run of the conduit. Consequently, strut 1502 can provide a mass that is relatively immobile, compared to the forces encountered in a given pull. Furthermore, it should be noted that different tie rods 1502 having different extraction capacities may be appropriate in different extractions, depending on the extraction forces that are expected to be encountered during these extractions.
Figure 16 illustrates additional examples, generally indicated by the number 1600, of towing eyelets suitable for operation with integrated systems for wire and cable installations. More specifically, Figure 16 illustrates examples of drive grommets, indicated 1602A, in which a cylindrical sleeve or barrel portion 1604A is screwed to receive the head portion 1606A. By stating the above in a different way, the sleeve or barrel portion 1604A can be screwed in to match the corresponding threads of the head portion 1606A. As indicated by numeral 1608, the sleeve or barrel portion 1604A may be marked as appropriate to indicate where to place the
<img file="MX352124B_D0034.tif" />
bending tool, when 1602A is clamped over the end of a conductor.
IMPI
MEXICAN INSTITUTE OF INDUSTRIAL CURRENCY drag eyelet
Figure 16 illustrates other examples of drive eyelets, generally indicated 1602B, in which the head portion 1606B is threaded to receive the cylindrical portion of the sleeve or barrel 1604B. In addition, the head portion 1606B can define any number of openings 1610A and 1610N (collectively, openings 1610). These openings 1610 may receive set screws or other suitable fasteners 1612A and 1612N (collectively, fasteners 1612), configured to secure the head portion 1606B to the sleeve or barrel portion 1604B. In the example shown in Figure 16 at point 1602B, the fasteners 1612 can engage the threaded portion of the openings 1610 when the drive eyes 1602B are assembled, thereby closing the head portion 1606B relative to the cylindrical portion. sleeve or barrel 1604B.
As shown generally at point 1602C, the towing eyelets can be assembled on a particular tow rope or cable, such as the hauling of Figure 12 at point 1202A. First, the hauling 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 barrel.
IMPI
INSTITUTE MEXICANO Dt LA INDUSTRIAL PROPERTY head portion 1606C (which represents either 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 towing eye 1616 as installed on a towing rope or cable 1202B. In general, the drive eye 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 tow cable 1202B. In addition, one end of a spring or other elastic element 1602 can hook the stopper 1604, and another end of the spring 1602 can hook the inside of the front of the assembled drag eye 1616. Generally, the head portions 1606A through 1606C (collectively, portions of the head 1606) may be captured on the trailing cables 1202 during manufacturing, when the stop 1604 is secured to the end of the trailing cable 1202. As described in greater detail below, the hauling cable 1202 and head portions 1606 can be reused in any number of individual extractions, as long as the
<img file="MX352124B_D0035.tif" />
sleeve and barrel portions 1604 can be replaced for different extractions by new sleeve or barrel portions 1604 adhered to head portions 1606 for each extraction.
Once one or more determined conductors are drawn through a conduit, the assembled drive eye 1616 can be disassembled in the following manner. First, if the assembled drive eye 1616 includes fasteners (eg, 1612A through 1612m, collectively 1612 fasteners), these fasteners 1612 may be released, allowing the head portions 1606 to unscrew relative to the sleeve portions. or barrel 1604. Otherwise, the head portions 1606 can 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 tow cables 1202B and head portions 1606 can be detached from the conductor as they are drawn through the conduit, and reused in future conduit runs.
Referring to the head portions 1606, these head portions can be connected to any number of different portions of the sleeve or barrel 1604. More specifically, different portions of the sleeve or barrel 1604 can be sized as appropriate.
<img file="MX352124B_D0036.tif" />
to receive conductors of different sizes or gauges. Therefore, the different portions of the sleeve or barrel 1604 may have different physical dimensions (eg, inside diameters, outside diameters, lengths, thickness, composition, etc.). However, these different sleeve or barrel portions 1604 may be upside down or upside down as appropriate to connect the common size head portions 1606. Therefore, the head portions 1606 can be used to draw a variety of different sized conductors through the conduit, connecting the differently sized barrel or sleeve portions 1604.
In light of the above description, the physical connection interface between the head portions 1606 and the different sized sleeve or barrel portions 1604 can be standardized. For example, the sleeve or barrel portions 1604 and the head portions 1606 can be joined by engaging the bolted 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 head portions 1606 and sleeves 1604 of Figure 16, they were made
<img file="MX352124B_D0037.tif" />
various observations. Although Figure 16 illustrates threaded head portions and sleeves, implementations of this disclosure may also include plain or unthreaded head portions and sleeves, while sliding together within the latch. Examples of such smooth head and sleeve portions are described in greater detail below in Figure 20. Additionally, 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 head portions 1606 and sleeve 1604 are hooked between them, their corresponding openings can be aligned to receive the bolt. Furthermore, it was noted that either the head portion 1606 or the sleeve 1604 can serve as a male portion in this engagement relationship shown in FIG. 16.
Figure 17 illustrates examples of unthreaded drive eyes, generally indicated by 1700. As shown in Figure 17, a representative head portion 1701 may define a passageway 1702, sized as appropriate to receive a bolt 1704. As can be understood from Figure 17, the head portions 1701 provide additional examples of the head portions 1606 illustrated in Figure 16. Additionally, implementations of this description may include
IMPI ^
MEXICAN INSTITUTE
OF INDUSTRIAL CURRENCY portions of the head 1701 and 1606 which have different
L <sup>1</sup> 'configurations without departing from the scope and spirit of the present description.
As indicated at 1706, the head portion 1701 may be slidable in a representative sleeve or barrel portion 1604, carried from Figure 16. More specifically, the sleeve or barrel portion 1604 may be generally cylindrical in configuration, defining an interior passageway 1708. The interior passageway 1708 may be dimensioned to receive the end of the head portion 1701.
In the examples shown in Figure 17, the sleeve or barrel portion 1604 may 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 aligns with passage 1710. At the same time, this alignment may allow bolt 1704 to slide into both passages, as indicated by point 1712, and secure tow rope 1172 to barrel portion 1604.
The physical dimensions of bolt 1704 can vary in different implementations. For example, the unthreaded drive eyes 1700 may rely on a friction fit between the bolt 1704 and the sleeve 1904 and / or the head portion 1701 to secure the bolt 1704 in place. In other cases, bolt 1704 may be secured in engagement with the
<img file="MX352124B_D0038.tif" />
sleeve or barrel portion 1604 and / or head portion 1701 by separate fastening means (eg, nuts, split pins, etc.).
As described above, the sleeve or barrel portion 1604 can be bent at the end of a particular conductor for extraction through the conduit. In some cases, a particular unthreaded drive eye assembly 1700 can be assembled onto drive heads that include one or more other assembled drive eyes. These other towing eyelets on the towing head may or may not be the same type as the 1700 towing eyelets.
Once the head portion 1701 is secured to the barrel portion 1604, extraction can proceed. After the removal is complete, the unthreaded drive eyes 1700 can be disassembled by reversing the assembly process described above. Subsequently, the bent sleeve or barrel portion 1604 can be discarded or recycled. However, the head portion 1701 may be used repeatedly for other extractions, after assembly with other portions of the sleeve or barrel 1604.
Figure 17 illustrates examples in which the head portion 1701 is a male portion that slides within the corresponding female portion provided by the head portion.
IMPI
MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY
<img file="MX352124B_D0039.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 1800, of delivery systems configured for delivery to job sites. More specifically, Figures 18A and 18B illustrate example implementations of delivery systems depicted in block form at item 408 of Figure 4, and as depicted at item 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 the one or more other delivery systems loaded and configured. For example, a given job site may be scheduled for one or more different extractions through different conduit systems, and a different delivery system may be configured for each of the different extractions.
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
IMPI MEXICAN INSTITUTE OF PROPERTY INDUSTRIAL can be extracted from delivery systems, while the ........ delivery systems remain loaded on the trailer. However, in other scenarios, delivery systems can be unloaded from the trailer and relocated where it is convenient on the job site before conductors are removed.
Figure 19 illustrates additional examples of the towing eyelets, generally indicated by the numeral 1900. In general, the above descriptions directed to the towing eyelets apply equally to the towing eyelets 1900 shown in figure 19. However, the figure 19 illustrates additional features that can be included in at least some implementations of the grommets. For example, marks 1902A, 1902B, and 1902C (collectively, marks 1902) may indicate example commands or sequences for making the bends when the pull eyelets 1900 are bent. More specifically, the first bend can be made by placing the bending tool approximately where indicated by the 1902A mark, a second consecutive bend can be made by placing the bending tool approximately where it is indicated by the 1902B mark, and a third bend consecutive can be done by placing the bending tool approximately where indicated by the mark
1902C.
As you can see from
IMPI
MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY
<img file="MX352124B_D0040.tif" />
reading the above description with reference to the figure
19, it has been observed that the order of the folds proceeds along a representative body or sleeve portion 1904 in the general direction indicated by arrow 1906. More specifically, assuming that a given pull eye 1908 includes a portion of head 1910 adhered to the body or sleeve portion 1904, the first bend made at approximately the 1902A mark may be closest to the head portion 1910. The second fold made approximately at the 1902B mark may be the next closest to the 1910 head portion, while the last fold made approximately at the 1902C mark may be the furthest from the 1910 head portion.
The bending of the body and the sleeve portion 1904 may displace a certain portion of the material that constitutes the body portion or sleeve 1904. In implementations that perform the sequence of bends 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 manner, displaced material can flow toward the distal end of a conductor over which the pull eye 1908 is bent.
In light of the above description, the first fold
<img file="MX352124B_D0041.tif" />
performed approximately where indicated by the 1902A mark may result in some displaced material flowing in both directions (i.e., some toward the head portion 1910, and some displaced material flowing in the direction indicated by the 1906 arrow) . 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, displaced material that flows opposite the 1906 direction would be blocked by the first 1902A bend. Similar considerations apply to material displaced by the third fold made approximately where indicated by the 1902C mark. Accordingly, performing the folds in the order indicated by the marks 1902A through 1902C may allow material displaced by the folds to flow unimpeded along the body portion 1904 in the direction indicated by arrow 1906.
In the examples shown in Figure 19, the sequence of bends is indicated by the marks 1902A through 1902C (for example, one mark 1902A may indicate the approximate first location of the fold, two marks 1902B may indicate the second approximate location of the fold. folded, and so on). However, implementations of this disclosure may employ other techniques to indicate a suggested sequence or order of bends. For example in
<img file="MX352124B_D0042.tif" />
some deployment scenarios, the body portions
1904 they can be marked with the numbers "1", "2", and "3", to suggest bending orders and / or locations.
In other examples, the body portions can be color-coded. For example, a first consecutive fold location can be color coded red, a second consecutive fold location can be color coded white, and a third consecutive fold location can be color coded blue, and so on these fold locations. Color-coded can be associated with the appropriate mnemonic (eg, "red-white-and-blue").
For convenience of description only, and not to limit possible implementations, the above drawings and descriptions may be related to examples that include portions of the body that are bent three times. However, implementations of this disclosure may incorporate any suitable number of folds, without departing from the scope and spirit of the present disclosure.
As described above 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 It is suggested in these drawings, successive folds can be rotated approximately 90 ° in relation to each other. To facilitate these rotational alignments between adjacent or successive bends, the body portion 1904 may be marked to produce a guide for alignment of the bending tool and the body portion relative to each other when successive bends are made. For example, as shown in Figure 19, the drive eyelet 1908 may include the marking line 1912 that crosses the markings 1902A through 1902C, so that the bending tool can be oriented toward the crosses between the line. trademark 1912 and trademarks from 1902A to 1902C. Figure 19 indicates a first crossing at point 1914A (between the 1912 mark line and the first 1902A mark), the second of said crosses at the 1914B point (between the 1912 mark line and the second 1902B mark), and a third of these crosses at point 1914C (between the 1912 mark line and the third 1902C mark).
In light of the above description, the 1908 pull eye can be bent by following the 1912 marking line along the 1904 body portion, and placing the bending tool approximately at the 1914A through 1914C crosses (collectively, crosses 1914) when consecutive bends are made. Following the crosses 1914 indicated in Figure 19 can result in a rotation compensation bending sequence shown earlier in Figure 13. Although Figure 19 provides examples in which <sup>67</sup> IMPI
INSTITUTE MEXICANO DE LA PROPERTY INDUSTRIAL 1912 marking lines trace a generally spiral configuration along the 1904 body portion, other techniques to guide the bending process to achieve rotation compensation bending sequences may be possible as well. For example, the body portion 1904 may be marked with marks or mixed marks (ie, longitudinal with the body portion 1904) indicating a rotational alignment for the bending tool.
Referring to the head portions 1910, these head portions may carry a textual subject or other matter subject. The subject matter can be printed, etched, etched, debossed, textured, or otherwise visibly affixed to portions of the 1910 head. Examples of the subject matter may include, but are not limited to: size of conductors over which a given drive eye 1908 is bent or sized to be bent; the trademark information, logos, or other trademark information associated with the grommet 1908, or associated with the integrated wire installation systems of which the grommets 1908 are a part; or similar.
Figure 20 illustrates a pull eye 1908A, with the head portion 1910 and a body portion 1904 assembled. Markings 1902A through 1902C and 1912 can facilitate consecutive folds along the
<img file="MX352124B_D0043.tif" />
<img file="MX352124B_D0044.tif" />
body portion 1904, for adhering the grommet 1908A onto a representative conductor 402. In addition, the grommet 1908A may include the tag 2004 representing a conductor size, or any other suitable information.
The towing eyelet 1908B is shown attached to a conductor, or may include other examples of 2006 labels, featuring logos or the like. In some implementations, the determined towing eyelet 1908 may include label 2004 or label 2006. In other implementations, the determined towing eyelet 1908 may include label 2004 and label 2006, with labels 2004 and 2006 appearing on different sides of the towing 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.
Figure 21 illustrates additional details of the pull eyelets, generally indicated 2100, as the drive eyelets pass through the bend. As shown generally at 2102, a representative towing eye 1908A is slid over to representative conductor 402. At point 2104, Figure 21 provides an expanded internal view of representative towing eyelet 1908A. This expanded internal view is simplified and not drawn to scale, and is provided solely for ease of the present description. Returning to the expanded internal view 2104 in greater detail, the buttonhole of '<sup>TR</sup>Representative drive 1908A may define an external γΓΉ edge 2106 to receive one end of conductor 402. For example, internal bore 2106 may be machined into blank material using a suitable drill bit. The bit may have a tapered cutting end, so that it leaves an angled lip or seat portion 2108 within the blank after the machining operation. Subsequently, another hole 2110 can be drilled through the target as shown, which has a diameter D2 that is less than the diameter D2.
Internal bore 2106 can be formed from the cylindrical blank of the material, by, for example, machining through the blank at a distance L with a drill 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 snagging. In general, the grommets described herein can be made of any metal that has high friction or relatively sticky characteristics when cold, particularly when bent in close contact, or metals generally used for the manufacture of electrical conductors (for example, of aluminum, copper, and the like).
As shown in item 2112, the feed dog
<img file="MX352124B_D0045.tif" />
908Α can be bent into the bent i * conductor shown in figure 21 understood as illustrative rather than limiting. Figure 21 indicates at point 1908B, drive eye 1908A as it is bent over conductor 402.
Figure 21 shows at item 2114 internal details related to the bent pull eye 1908B. In the example shown, the pull eye 1908B can be bent at a stripped portion 2116 of the conductor 402, the stripped portion 2116 passing into the internal perforation 2106. A portion of the body 2118 of a stopper 2120 may pass into the smaller bore 2110, accommodating a portion of the ball 2122 and contacting the lip portion 2108 when the stopper 2120 is fully internally seated within. buttonhole d drive 1908B (to the right in the example shown in figure 21). In some cases, one end of the body portion 2118 may be exposed through the front of the pull 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 bent pull eye 1908B.
The ball portion 2122 can be manufactured in a previously defined dimension, depending on the size of the drive eye 1908 and / or the gauge of the conductor 402 with which the drive eyelets 1908 are to be used. Once the ball portion 2122 is completely 2108 lip area, can provide u
<img file="MX352124B_D0046.tif" />
may contact the end of conductor 402.
By exposing it in a different way, the lead 402 can be inserted into the drive eye 1908 until the end of the lead 402 rests against the ball portion 2122. At this point, the lead 402 is fully positioned at the bottom of the drive eye. 1908, and the drive eye 1908 can be bent over the conductor 402.
Some implementations of the present disclosure may employ insulation stripping tools that remove a previously defined length of insulation from conductor 402, exposing that length of bare metal. If any portion of the bare metal remains exposed after conductor 402 is inserted into towing eyelet 1908, this may indicate that conductor 402 is not fully bottomed into towing eyelet 1908 and may be further inserted to obtain a more secure fold.
In the example shown in FIG. 21, the drive eye 1908 is bent over the bare metal conductor, with no insulation captured between the drive eye 1908 and the bare metal conductor. Consequently, the drag forces can be transmitted from the drag eye 1908 directly to the bare metal conductor. Without
<img file="MX352124B_D0047.tif" />
However, other implementations are possible, in which at least a portion of the bend between the pull eye 1908 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 grommets can be bent over the outer surfaces of the conductors. The implementations of the bending techniques described herein 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 threads can reduce the pull force of the bend between the conductor and the pull eye. Furthermore, the bending techniques described herein can operate without plugs, wedges, or other additional devices forced into the conductor wires as part of the bending process. Consequently, the bending forces can act only on the outer portion of the conductor, without using said plugs, wedges, or the like to generate internally counteracting forces from within the conductor wires.
Figure 22 illustrates examples of outside diameters, inside diameters, and wall thicknesses, generally indicated with the numeral 2200, suitable for implementing the different drive eyelets described herein. Figure 22 provides a representative towing eye at point 2202,
<img file="MX352124B_D0048.tif" />
this drive eyelet 2202 including a hollow, cylindrical sleeve portion 2204 and a somewhat rounded head portion 2206. The different dimensions and proportions s shown in Figure 22 are illustrative, and Figure 22 is not drawn to scale.
As described above, the different grommets 2202 may be provided to bend over conductors having different sizes or gauges. Therefore, the grommets 2202 may be available in different sizes, according to 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 can 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 sleeve portions 2204 may be approximately the same regardless of the size or gauge of the conductor being installed, the overall length of the grommets <sup>74</sup> IMPI MEXICAN INSTITUTE OF PROPERTY -¿SwmnJ INDUSTRIAL drag 2202 may vary somewhat, this variation being attributable to the different lengths of the portions of the head 2206.
As depicted at 2208, Figure 22 provides a representative cross-sectional view of one size of a towing eyelet 2202. As depicted at 2210, Figure 22 provides a representative cross-sectional view of another size of a towing eyelet 2202. In the example shown in FIG. 22, view 2208 corresponds to pull eye 2202 sized for removal with a smaller conductor, compared to the pull eye depicted in view 2210.
Referring first to view 2208, this size of drive eye 2202 can be characterized by a first outside diameter (ODJ, and a first inside diameter (10). The difference between the OD (and the IDi represents an associated wall thickness with this size 2202 pull eye.
Referring now to view 2210, this size of drive 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 the OD<sub>2</sub> and the ID<sub>2</sub> represents a wall thickness associated with this size of the drive eye 2202.
Although Figure 22 is not drawn to scale, the wall thicknesses of the two grommets represented by numbers 2208 and 2210 may be approximately the same, although the outer diameters and
IMPI
MEXICAN INSTITUTE
OF INDUSTRIAL PROPERTY
<img file="MX352124B_D0049.tif" />
Inside diameters may vary to accommodate different sizes or gauges of conductors. More specifically, the ID-ι and ID bore diameters<sub>2</sub> they can be sized to tightly receive a conductor having a certain size or gauge. Exposing them differently, the inside diameters IDt and ID<sub>2</sub> can be selected for a given conductor gauge, so that the conductor encounters slight friction or physical resistance when it is being inserted into the grommet 2202. In different implementations, different tolerances or gaps are possible between the grommets 2202 and the driver. In example implementations, however, these tolerances can be less than equal to approximately 100 mils. However, experimentation with bending the drive eye 2202 with different tolerances can produce similar or different results. A tight engagement described herein can make safe bends possible without using the plugs, wedges, or other ancillary devices, as described above.
Regarding the wall thicknesses, as defined in the internal diameters IDi and ID<sub>2</sub> and the outside diameters OD, and OD<sub>2</sub>, different wall thicknesses are possible in different implementations. However, in example implementations, these wall thicknesses can be less than or equal to approximately 1/8 ”(0.317
<img file="MX352124B_D0050.tif" />
cm). However, once again experimentation with different wall thicknesses and materials can produce similar or different results.
As described above, implementations of this disclosure may employ various techniques to indicate a rotational sequence and / or orientation of successive or consecutive folds along the pull eyelets. Referring to Figure 23, this figure illustrates sequences and / or orientations of rotation, generally indicated at 2300, for making successive bends along representative pull eyelets 2302 and 2304. More specifically, representative grommets 2302 and 2304 may 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 example implementations, color coded areas 2306A may be printed or otherwise painted as red. The 2306B color-coded areas may be painted white, and the 2306C color-coded areas may be painted blue. Consequently, the grommets 2302 and 2304 can use the color-coded areas 2306A to 2306C in relation to a device.
INSTITUTE MEXICANO DE LA PROPERTY V ^ arwMfií INDUSTRIAL -<sup>δ</sup> mnemonic or memory gadgets, such as "red, white, and blue." For example, color-coded areas 2306A through 2306C may suggest personnel operations to fold the red area first, the white area second, and the blue area third.
Also indicated with numbers 2302 and 2304, some implementations of the pull eyelets that may indicate rotational orientations of successive folds. In the examples shown, the red area can be folded in a given rotation orientation, followed by the bending of the white offset area by approximately 90 °, followed by the bending of the blue area after offset by approximately 90 ° of the previous bend.
As shown in number 2302, the grommets may be printed or otherwise marked with logos, trademarks, or other visual matters. As shown at 2304, the grommets can be marked to indicate a wire gauge for which a given grommet is sized.
Figure 24 illustrates sequences and / or orientations of rotation, generally indicated 2400, for making successive bends along the representative grommets 2402A, 2402B, 2402C, and 2402D (collectively, grommets 2402). Generally, 2402 Drag Eyelets
<img file="MX352124B_D0051.tif" />
they may incorporate dashes or other indicia to perform functions similar to those described above in connection with the color-coded areas 2306 shown in Figure 23. In the example shown in Figure 24, a location for a first fold may be indicated by a single dash (ie, "I"), a location for the next fold may be indicated by a double dash (ie, "II ”), And the location for the next fold can be indicated by a triple dash (ie,“ III ”).
Similar to the above description regarding the rotational orientation of successive folds, the pull eyelets 2402 shown in Figure 24 may also suggest orientation or a bending tool when successive folds are made. For example, as shown most clearly in numbers 2402B or 2402D, the location of a single dash can indicate where to orient the bending tool when making a first bend. As shown more clearly with numbers 2402A or 2402C, the location of the double dash can indicate where to orient the bending tool when making a second bend. As shown most clearly by numbers 2402B or 2402D, the location of the triple dash can indicate where to orient the bending tool when making a third bend.
Although the above description is mainly focused on wires
<img file="MX352124B_D0052.tif" />
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 at 2500. The respective grommets 2506A through 2506C are shown attached to the corresponding insulated conductors 2504A through 2504C which are comprised of a cover or shield 2502 I which may be constructed of any suitable metallic or non-metallic material. It should be noted that the grommets 2506A through 2506C as shown in Figure 25A may include any of the alternative grommets discussed above and may be attached to the corresponding insulated conductors 2504A through 2504C in any manner described above. The grommets on the 2506A through 2506C are used to adhere the insulated conductors from the 2504A to the 2504C to the respective trailing cables from the 2508A through 2508C. Although Figure 25 illustrates each of the 2504A through 2504C insulated conductors secured with one of the 2506A through 2506C grommets, it should be understood that fewer than all of the 2500 shielded cable insulated conductors can be secured with one of the grommets. drag.
<img file="MX352124B_D0053.tif" />
As described above, the trailing cables of the
2508A through 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. Also, the 2508A to 2508C tow cables can be constructed in any way as explained above.
In order to construct the shielded cable trailing head assemblies 2500 illustrated in Figure 25, the shielded cable shield 2502 can be cut and removed to expose the insulated conductors 2504A to 2504C; such as a ground 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 tape, comprising insulated conductors 2504A through 2504C, non-insulated conductors, and any other filler material can also be cut and removed. According to the modalities, a portion of any ground conductor and a portion of any filler material that can be removed from shielded cable 2500 by cutting the ground conductor and returning the filler material to shield 2502.
Insulated conductors 2504A through 2504C should be cut to lengths associated with stepped lengths of trailing cables 2508A through 2508C,
INSTITUTE MEXICANO DELAfWPíEDAD INDUSTRIAL as further explained 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 grommets from 2506A to 2506C, as further explained above with respect to at least Figures 7 and 11. Attaching the 2506A to 2506C towing eyelets to the conductor portions of the 2504A to 2504C insulated conductors results in shielded cable drag head assemblies 2500 as illustrated in Figure 25A.
Armored cable trailing head assemblies 2500 as illustrated in FIG. 25A can be pulled over obstructions, such as pulleys and struts, as they are being installed. Figures 25A and 25B further illustrate modalities for protecting the shielded cable trailing head assemblies 2500 from such obstructions and for maintaining the shield 2502 from slipping off the insulated conductors 2504A through 2504C and any other materials comprised within the shield while the shield cable is being installed.
As shown in Figure 25A, a spring, nail, or other insertable object 2510 can be inserted into shield 2502 of shielded cable 2500 to prevent the shield from slipping off the insulated conductors 2504A through 2504C during installation.
<img file="MX352124B_D0054.tif" />
As illustrated in Figure 25B, bonding material 2512, such as tapes, may be applied to shielded cable 2500 to protect it from slippage between shield 2502 and insulated conductors 2504A through 2504C during shielded cable installation. The binding material 2512 also protects the screw 2510 from dislodging or being dislodged from the shielded cable 2500 during the installation of the shielded cable. Additionally, bonding material 2512 protects the shielded cable trailing head assemblies 2500 from getting caught in any obstructions during installation. According to the embodiments, the bonding material may be applied to the insulated conductors 2504A through 2504C of the shielded cable 2500 from before the cut on the shield 2502, as illustrated in FIG. 25A; past the cut; and on the armor itself. According to additional modalities, bonding material 2512 may be applied from a minimum of six to eight inches (15.24 to 20.32 cm) on the 2502 shield, past the shield cut, and up to a minimum of six to eight inches (15.24 at 20.32 cm) on insulated conductors 2504A through 2504C. The bonding material 2512 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
<img file="MX352124B_D0055.tif" />
IMPI ^
INSTITUTE MEXICANO DE LA PROHEDAD industrial bonding material 2512 to protect it in addition to the slippage between shield 2502 and insulated conductors 2504A to 2504C during the installation of the shielded cable. The protective material can also further protect the screw 2510 from dislodging or from being dislodged from the shielded cable 2500 during the installation of the shielded cable. Additionally, the protective material can protect the shielded cable trailing head assemblies 2500 from being caught in any obstructions during installation. According to the embodiments, the protective material can be fully or partially applied over the bonding material 2512.
As previously described with respect to Figure 5, multiple parallels, each consisting of one or more conductors 402, may be wound onto a reel 406 n layers, one on top of the other, for delivery to a site of work. Each parallel on spool 406 can then be delivered separately for independent multiple wire / cable pulls. Figure 26 illustrates a cross section of a reel 406 containing multiple layered parallels 2602A to 2602C on the reel. For example, spool 406 may contain a first parallel consisting of four 210 ft (6400.8 cm) long 350 kcmil 402 conductors in the first layer 2602A, a second parallel consisting of three 185 ft (5638.8 cm) long 350 kcmil 402 conductors cm) in length in a second layer
<img file="MX352124B_D0056.tif" />
IMPI
MEXICAN INSTITUTE
OF Ι.Λ INDUSTRIAL PROPERTY
2602B, and a third parallel consisting of five conductors of
350 100 ft (3048 cm) 402 kcmil in the 2602C third layer.
Upon delivery of reel 406 to the job site, installers can pull the third parallel of the third layer 2602C, 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 spool 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 the one described here. Routine 2700 begins at step 2702, where the end of the first post wound onto spool 406 is adhered to a spool flange 606. The full length of the first parallel conductors 402 can be wound onto the spool 406, leaving one end of the first parallel exposed. In accordance with embodiments, the first parallel conductors 402 may be terminated with drive eyes 700 which are further 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 head assembly may be covered with a protective cover 416, as previously described with
IMPI
INSTITUTE MEXICANO E <? ™ SSY
D £ Lz. χ_: S'V DX?> Qa »ñSE INDUSTRIAL '' 'St-SL.
Referring to FIG. 4. Drag head assembly 1000 can be further connected to a short circuit of rope 2802 or any other material to handle the terminal end of the parallel in assimilation, storage, administration, and delivery. Short rope 2802 may be stapled or otherwise secured within a flange 606 of spool 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 shrink-wrapped. This can be accomplished by winding one or more layers of shrink wrap material 2804 onto the first parallel of spool 406, as further shown in FIG. 28. Shrink wrap material 2804 can serve to separate multiple layered parallels on spool 406, allowing each parallel to be delivered without interference from layer 2602A to next 2602C. Routine 2700 then proceeds from step 2704 to step 2706, where a bore 2902 is drilled through the interior of a flange 606A of spool 406, as shown in FIG. 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. The hole 2902 may be of a size sufficient to accommodate a conductor 402 of the<sup>86</sup> IMPI ^
INSTITUTE MEXICANO DE LA PROPERTY V> a · INDUSTRIAL second parallel to be wound on a reel 406, as will be described later.
Then, routine 2700 proceeds from step 2706 to step 2708, where the terminal ends of the second parallel conductors 402A through 402C are positioned so that the end of one conductor 402A is offset from the ends of the remaining conductors. 402B through 402C, as shown in Figure 30. In one embodiment, the end of the offset conductor 402 can be 12 to 18 inches (30.4 to 45.7 cm) longer than the ends of the other conductors. Starting at step 2708, routine 2700 proceeds to step 2710, where protective covers 3002 are installed at the ends of the second parallel conductors 402A through 402C. 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 spool 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 3004 tensile tape or other bonding material, as further shown in Fig.
<img file="MX352124B_D0057.tif" />
INSTITUTE MEXICANO PE LA PÜCHEPAD INDUSTRIAL
<img file="MX352124B_D0058.tif" />
Figure 30.
Routine 2700 then proceeds from step 2710 to step 2712, where the end of the longer conductor 402A is drawn through hole 2902 drilled through flange 606A of spool 406 in step 2706 above, as shown in FIG. 31. Longer conductor 402A can then be stapled or otherwise secured to the outside of flange 606A. Then, from step 2712, routine 2700 proceeds to step 2714, where the second parallel leads 402A through 402C are wound on spool 406 on top of the first shrink wrap layer, as shown. shown further in figure 31. Once the full length of the second parallel 402A through 402C conductors have been wound on spool 406, the end of the second parallel can be attached to flange 606A and routine 2700 repeated to add third layer 2602C to spool of cable. It will be appreciated that any number of parallels can be layered onto spool 406 in this manner, provided that the full number and weight of combined conductors 402 for multiple parallels does not exceed the significant capacities of spool 406 or the consolidated systems. delivery 408 that are being used.
<img file="MX352124B_D0059.tif" />
IMPI INSTRUI O MEXICANO Illustrative Applications <sup>THE</sup>| NOtJSTMAl
As shown in the table below, implementations of this description can save on time spent by electrical contractor (EC) personnel. By presenting the table below, it is seen that the wire pulling scenarios depicted in this table are illustrative only and that implementations of the present disclosure can perform other wire pulling scenarios without departing from the scope and spirit of the present disclosure. Furthermore, the direct labor time and cost estimates provided in this table are illustrative only and may vary in different implementations of the present disclosure. For example, the following table presents illustrative factors related to a 250 ft (76.20 m) overhead 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 table below 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 present illustrative data <sup>89</sup>
MEXICAN INSTITUTE OF PROPERTY INDUSTRIAL related to tube and wire installations made in accordance with the present description. The right column is an illustrative list of installation steps, a percentage of total removal time, compared to the times of EC electrical contractor personnel using traditional techniques.
<td colspan="4">Extraction of 250 'of overhead cable, 4 conductors 500 with 1/0 to ground</td>
<td>Traditional Tube and Wire Installation</td><td></td><td></td><td>Improved Solutions:</td>
<td></td><td>time - minutes</td><td>time - minutes</td><td></td>
<td>5 x 1000 'spools of black conductor arrive at job site by contractor personnel unloading and transporting 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 in parallel on a single reel</td>
<td colspan="4"></td>
<td>Contractor personnel prepare 5 spools on gauges in preparation for extraction - may need equipment and leveling</td><td> 30</td><td> 5</td><td>EC prepares 1 reel on jacks in preparation for extraction - may need equipment and grading</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 colspan="4"></td>
<td>EC applies phase tape to each 3x5 conductor</td><td> 15 |</td><td>I 0</td><td></td>
<td colspan="4"></td>
<td>Contractor personnel extract multiple ropes and braided rags through 250 'conduit</td><td> 10</td><td> 5</td><td>The EC pulls the pull cord out of a 250 foot conduit</td>
<td></td><td></td><td></td><td></td>
<td>The EC prepares the conductor heads for removal</td><td> 60</td><td> 0.5</td><td>Attach the pull eye to the pull cord</td>
<td colspan="4"></td>
<td>Contractor personnel apply lubrication to the conduit head at the start of extraction</td><td> 30</td><td> 0</td><td></td>
<td colspan="4"></td>
<td>The EC prepares to apply lubricant in the 1 extraction boxes</td><td> 30 !</td><td>1st</td><td></td>
<td colspan="4"></td>
<td>The EC prepares the tie rod (bolted to the floor)</td><td> 30 |</td><td> 1 15</td><td>EC prepares a light weight tie rod</td>
<td colspan="4"></td>
<td>Cable pull begins, EC applies lubrication at 2 locations, and strings pull speed 6 feet per minute</td><td> 45</td><td> 30</td><td>Cable pull begins, rope pull speed ranges from 6 to 25 feet per minute (average 16 'per minute)</td>
<td colspan="4"></td>
<td>Conductors and liner are cleaned of lubricants</td><td> 15</td><td>I or</td><td></td>
<td colspan="4"></td>
<td>total minutes</td><td> 312</td><td>I 65.5</td><td></td>
<td colspan="4"></td>
<td>6-man labor $ 70.00 per hour</td><td> $2,184.00</td><td> $305.67</td><td>4 men</td>
Steps as% of total extraction time - using old THHN contractor personnel
14%
1%
5%
3%
19%
<img file="MX352124B_D0060.tif" />
7o%
10%
14%
W
100%
<img file="MX352124B_D0061.tif" />
conclusion
IMPI
MEXICAN INSTITUTE
OF THE INDUSTRIAL EROMEDAD
Having provided the above description of the drawing figures, several observations were made. In general, the above drawings are not drawn to scale, unless explicitly stated otherwise. Accordingly, the dimensions or proportions of particular elements, or the relationships between those different elements, as shown in the drawings are selected only for the sake of convenience of description, but do not limit the possible implementations of the present description.
The different aspects of the integrated systems described herein can be implemented in connection with wires, cables or conductors of any size and convenience. For example, different towing eyelets from the integrated systems described herein may be provided for use on particular sizes of cable or wires. More specifically, the grommets may be sized as appropriate for different sizes of wire or types of conductors (eg, copper or aluminum).
In general, the implementations of the embedded systems 110 described herein can reduce the risk of damaging the cable or wire during installation (eg, pulls through conduit or shielded cable installation). At the same time, the risk of equipment damage that is attributed to such wire damage can be reduced. Additionally, 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 insulation.
Personnel working in service centers can build the integrated cabling solutions described here. Among other operations, these construction processes may include at least the bending of the driving eyes of the conductors and the assembly of the driving eyes within the driving heads. These construction operations can be performed prior to delivering the cabling, assembly and integrated solutions to the job site. Putting it another way, integrated cabling solutions can be pre-assembled for delivery to a job site.
In light of the above description, the service center personnel who build the integrated cabling solutions can be specially trained to assemble and build the integrated cabling solutions. In addition, these service center personnel can be equipped with specially designed tools to facilitate efficient construction of integrated cabling solutions. For example, the service center staff may be υ «χ xa * a & Mmw & arw * ·
<img file="MX352124B_D0062.tif" />
INSTITUTE MEXÍCANU DE LA PROPERTY INDUSTRIA!
equipped with a set of separators to remove a
<img file="MX352124B_D0063.tif" />
IMPI
INSTTTVTO M £ XKANO DS INDUSTRIAL MYOFIETY A uniform amount of insulation prescribed for the conductors, w —— «<- III iill — II and can also be equipped with standardized tools to bend the grommets on the conductors.
Contractor on-site personnel may be tasked with a variety of different construction-related functions. Prior techniques for facilitating extractions through the conduit may comprise such personnel preparing the wire heads in packages of one or less. Accordingly, such personnel may possess varying amounts of experience in preparing such trailing heads. However, the service center personnel described above can specialize in various tasks involved with building integrated cabling solutions. Therefore, integrated cabling solutions built by such service center personnel can function more consistently than towheads 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 can be made to the subject matter described herein without departing from the exemplary and application modalities illustrated and described, and without departing from the real spirit and scope of the subject matter claimed, which is established in claims.
IMPI
MEXICAN INSTITUTE
OF THE INDUSTRIAL? RO? IEDAD
<img file="MX352124B_D0064.tif" />
the following
<img file="MX352124B_D0065.tif" />
Contents46
100 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
135 members in 21 offices
Priority claims11
| Document | Office | Kind | Date |
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| 61174210 | United States of America | – | |
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| 2010028113 | United States of America | W |
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| US2007243761A1 | United States of America | A1 | |
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Numbers
- Publication
- 352124
- Application
- 2016004494
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, 2
- H02G1 08
- G05D7 06