Rotary air connection with central valve for tire inflation system.
Abstract
Una conexión de aire giratoria para un sistema de inflación de neumáticos teniendo una fuente de presión de aire, la conexión de aire giratoria comprendiendo una porción estacionaria y una porción giratoria montada giratoriamente a la porción estacionaria, la conexión de aire giratoria teniendo un canal central con una válvula de verificación unidireccional colocada en el canal central de manera que permite al fluido fluir desde la fuente de presión de aire en una dirección a través del canal central pero no en la dirección opuesta hacia la fuente de presión de aire.

Term
4.7 yearsleft in the term
Expires 21 June 2031.
- Priority
- Filed
- Granted
- Today
- Expires
5 claims: 1 independent, 4 dependent
- 1REIVINDICACIONES nsTnvro mexicano de la propiedad INDUSTRIAL 1. Un sistema de inflación de neumáticos automático, comprendiendo:una conexión fluida giratoria en comunicación flqida sellada presurizada de forma 5 sustancialmente continúa con una fuente de presión de fluido y recibe continuamente de la fuente de presión de fluido un fluido presurizado a una presión de fluido predeterminada sustancialmente constante para inflar una llanta neumática, la conexión fluida giratoria tiene un eje de rotación y comprende: una porción estacionaria que tiene un primer canal formado en el mismo en el eje de 10 rotación;una porción giratoria giratoriamente acoplado a la porción estacionaria y en contacto de sellado continuo con la porción estacionaria en una interfaz de sellado, la porción giratoria tiene un segundo canal formado en el mismo en el eje de rotación y en comunicación de fluido sellada sustancialmente con el primer canal, el primer canal y el segundo canal juntos forman un canal 15 central en el eje de rotación a través de los cuales el fluido presurizado para inflar una llanta neumática puede fluir;y una válvula de retención normalmente cerrada dispuesta en el canal central a lo largo del eje de rotación para permitir al fluido presurizado fluir de la fuente de presión de fluido en una dirección a través del canal central hacia una llanta neumática pero no en dirección opuesta hacia la 20 fuente de presión de fluido, la válvula de retención normalmente cerrada es directamente accionable neumáticamente por el fluido presurizado a la presión de fluido predeterminada sustancialmente constante de la fuente de presión mientras la conexión fluida giratoria está en comunicación, fluida sellada presurizada de forma sustancialmente continúa con la fuente de presión de fluido, la válvula de retención normalmente cerrada es configurada para abrirse cuando la presión de fluido en la llanta 25 neumática es menor que la presión de fluido predeterminada sustancialmente constante y cerrada cuando la presión de fluido en la llanta neumática sustancialmente ¡guala la presión de fluido predeterminada sustancialmente constante;y una llanta neumática en comunicación fluida sellada con la IMPI INSTITUTO MtXICAN* > DE LA TF-OflBUA» INBUSTKIAL conexión fluida giratoria de modo que el fluido presurizado para inflar una llanta neumática puede flüTaTTlIañlá’heü'máfíca de la conexión fluida giratoria. 5
- 2La conexión fluida giratoria de conformidad con la reivindicación 1, en donde la válvula de retención normalmente cerrada se coloca en uno del primer canal de la porción estacionaria y el segundo canal de la porción giratoria.
- 3La conexión fluida giratoria de conformidad con la reivindicación 1, en donde 10 además comprende un tubo giratorio, en donde la porción estacionaria comprende un estator que tiene el primer canal en el mismo, y la porción giratoria comprende un cuerpo de “T que tiene el segundo canal en el mismo, el estator y el cuerpo de “T” en comunicación fluida a través del tubo giratorio, y el primer canal del estator, el tubo giratorio y el segundo canal del cuerpo de “T forman juntos el canal central.
- 4La conexión fluida giratoria de conformidad con la reivindicación 3, en donde la válvula de retención normalmente cerrada se coloca en uno del primer canal del estator, el tubo giratorio y el segundo canal del cuerpo de “T”. 20 5. La conexión fluida giratoria de conformidad con la reivindicación 1, en donde la porción estacionaria comprende un árbol que tiene el primer canal en el mismo, y la porción giratoria comprende un tapacubos teniendo el segundo canal en el mismo, y el primer canal del árbol y el segundo canal del tapacubos juntos formando el canal central. r 25 6. La conexión fluida giratoria de conformidad con la reivindicación 5, en donde la válvula de retención normalmente cerrada se coloca en uno del primer canal del árbol y el segundo canal del tapacubos. INSTITUTO MEXICANO 7. La conexión fluida giratoria de conformidad con la reivindicación 1, en donde la porción estacionaria comprende un árbol que tiene el primer canal en el mismo, y la porción giratoria comprende un alojamiento que tiene un elemento de grafito colocado en el mismo, el alojamiento y el elemento de grafito tienen el segundo canal en el mismo y, el elemento de grafito siendo impulsado en contra del árbol para formar un sello anverso, y el primer canal del árbol y el segundo canal del alojamiento y el elemento de grafito juntos formando el canal central. 8. La conexión fluida giratoria de conformidad con la reivindicación 7, en donde la válvula de retención normalmente cerrada se coloca en uno del primer canal del árbol y el segundo canal del alojamiento y el elemento de grafito. 9. La conexión fluida giratoria de conformidad con la reivindicación 1, en donde la porción estacionaria comprende un estator teniendo el primer canal en el mismo y la porción giratoria comprende un tubo giratorio teniendo un cuerpo de “T” juntos formando el segundo canal en el mismo, y el primer canal del estator y el segundo canal del tubo giratorio y el cuerpo de “T” juntos formando el canal central. 10. La conexión fluida giratoria de conformidad con la reivindicación 9, en donde la válvula de retención normalmente cerrada se coloca en uno del primer canal del estator y el segundo canal del tubo giratorio y el cuerpo de “T”. 11. La conexión fluida giratoria de conformidad con la reivindicación 1, en donde la ► válvula de retención normalmente cerrada comprende una válvula de neumático de automóvil. 12. El sistema giratorio de conformidad con un regulador de presión en comunicación fluida sellada presurizada de fnrma^sust^nr.iaimanto»continúa con la fuente de presión de aire y la conexión de aire giratorio. 13. Una conexión fluida giratoria capaz de comunicación fluida sellada presurizada de forma sustancialmente continúa con una fuente de presión de fluido y capaz de recibir continuamente de la fuente de presión de fluido un fluido presurizado a una presión de fluido predeterminada sustancialmente constante para inflar una llanta neumática, la conexión fluida giratoria tiene un eje de rotación y comprende:una porción estacionaria que tiene un primer canal formado en el mismo en el eje de rotación;una porción giratoria giratoriamente acoplado a la porción estacionaria y en contacto de sellado continuo con la porción estacionaria en una interfaz de sellado, la porción giratoria tiene un segundo canal formado en el mismo en el eje de rotación y en comunicación fluida sellada sustancialmente con el primer canal, el primer canal y el segundo canal juntos forman un canal central en el eje de rotación a través de los cuales el fluido presurizado para inflar una llanta neumática puede fluir;y una válvula de retención normalmente cerrada dispuesta en el canal central a lo largo del eje de rotación para permitir al fluido presurizado fluir de la fuente de presión de fluido en una dirección a través del canal central hacia una llanta neumática pero no en dirección opuesta hacia la fuente de presión de fluido, la válvula de retención normalmente cerrada es directamente accionable neumáticamente por el fluido presurizado a la presión de fluido predeterminada sustancialmente constante de la fuente de presión mientras la conexión fluida giratoria está en comunicación fluida sellada presurizada de forma sustancialmente continúa con la fuente de presión de fluido, la válvula de retención normalmente cerrada es configurada para abrirse cuando la presión de fluido en la llanta neumática es menor que la presión de fluido predeterminada sustancialmente constante y cerrada IΜ Ρ1 (¾¾ cuando la presión de fluido en la llanta neumática sustancialmente iguala la presMcni nái^rííuj'áo P/f !Ni>UST?JAL predeterminada sustancialmente constante. 14. La conexión fluida giratoria de conformidad con la reivindicación 13, en donde la válvula de retención normalmente cerrada se coloca en uno del primer canal de la porción estacionaria y el segundo canal de la porción giratoria. 15. La conexión fluida giratoria de conformidad con la reivindicación 13, en donde además comprende un tubo giratorio, en donde la porción estacionaria comprende un estator que tiene el primer canal en el mismo, y la porción giratoria comprende un cuerpo de “T” que tiene el segundo canal en el mismo, el estator y el cuerpo de “T” en comunicación fluida a través del tubo giratorio, y el primer canal del estator, el tubo y el segundo canal del cuerpo de “T” juntos forman el canal central. 16. La conexión fluida giratoria de conformidad con la reivindicación 13, en donde la porción estacionaria comprende un árbol que tiene el primer canal en el mismo, y la porción giratoria comprende un tapacubos teniendo el segundo canal en el mismo, y el primer canal del árbol y el segundo canal del tapacubos juntos formando el canal central. 17. La conexión fluida giratoria de conformidad con la reivindicación 13, en donde la porción estacionaria comprende un árbol que tiene el primer canal en el mismo, y la porción giratoria comprende un alojamiento que tiene un elemento de grafito colocado en el mismo, el alojamiento y el elemento de grafito tienen el segundo canal en el mismo y siendo impulsado en contra del árbol para formar un sello anverso, y el primer canal del árbol y el segundo canal del alojamiento y el elemento de grafito juntos formando el canal central. IMPI INSTITUTO MEXICANO DE LA PROPIEDAD 18. La conexión fluida giratoria de conformidad con la reivindicación 13, «wvátme porción estacionaria comprende un estator teniendo el primer canal en el mi¡ comprende un tubo teniendo un cuerpo de “T” juntos formando el segundo canal en el mismo, y el primer canal del estator y el segundo canal del tubo y el cuerpo de “T” juntos formando el canal
- 55 central. 19. La conexión fluida giratoria de conformidad con la reivindicación 13, en donde la válvula de retención normalmente cerrada comprende una válvula de neumático de automóvil.
Independent claims5
147 paragraphs in 12 sections, as filed
(54) Title: ROTATING AIR CONNECTION WITH CENTRAL VALVE FOR TIRE INFLATION SYSTEM. (54) Title: ROTARY AIR CONNECTION WITH CENTRAL VALVE FOR TIRE INFLATION SYSTEM.
(57) Summary
A rotary air connection for a tire inflation system having an air pressure source, the rotary air connection comprising a stationary portion and a rotary portion rotatably mounted to the stationary portion, the rotary air connection having a center channel with a one-way check valve positioned in the center channel so that fluid can flow from the air pressure source in one direction through the center channel but not in the opposite direction to the air pressure source.
(57) Abstract
A rotary air connection for an automatic tire inflation system having an air pressure source, the rotary air connection comprising a stationary portion and a rotatable portion rotatably mounted to the stationary portion, the rotary air connection having a central channel with a one-way check valve disposed in the central channel so as to allow fluid to flow from the air pressure source in one direction through the central channel but not in the opposite direction toward the air pressure source.
PATENT TITLE No. 359133
Headlines):
EQUALAIRE SYSTEMS, INC.
<img file="MX359133B_D0001.tif" />
Home:
1414 Valero Way, Corpus Christi, Texas, 78409, USA
<td>Denomination:</td><td>ROTARY AIR CONNECTION WITH CENTRAL VALVE FOR TIRE INFLATION SYSTEM.</td>
<td>Classification:</td><td>CIP: B60C23 / 00 CPC: B60C23 / 003; B60C23 / 00</td>
<td>Inventor (s):</td><td>MARK KEV1N HENNIG</td>
Number:
MX / a / 2012/015281
REQUEST
Fócha fie International Presentation:
June 2011
PRIORITY
Country: Date: Number:
US June 21, 2010 61 / 356,947
Validity: Twenty years
Expiration Date: June 21, 2031
Issue Date: September 17, 2018
The reference patent is granted based on articles 1 ·. 2? fraction V, β “fraction III. and 59 of the Law on Industrial Property.
In accordance with article 23 of the Industrial Property Law, this patent had a non-extendable term of twenty years, counted from the date of filing of the international application and will be subject to the payment of the fee to maintain the rights in force.
Who subscribes to this title does so based on the provisions of articles 6 sections III and 7 bis 2 of the Industrial Property Law (Official Gazette of the Federation (0.0, F.) 27 / 06M991, amended on 0aW19 $ 4, 10/25/1996, -. 12/28/1997,. 05/17/1999, 01/26/2004, 06/16/2005. 01/25/2006, 05/06/2009, 01/06 / 2010,48 / 00 / 2010,28 / 06/2010. 27/61 / 2012,09 / 04/2012, 01/06 / 20.1,6 and 13/03/2018); Articles 1, 3, section V, subsection a), 4 "and 12" sections I and III of the Regulations of the Mexican Institute of Industrial Property 4D.OF 12/14/1999, returned on 07/01/2002, 07/15/2004, 07/28/2004 and 09/07/2007); articles 1 ·, 3 · 4 “„ 5 * fracoton V subsection a), 16 fraction »l and III and 30 of the Organic Statute of the Mexican Institute of Industrial Property (DOF 12/27/1999, amended on 10/10/2002, 07/29/2004, 08/04/2004 and 09/13/2007): 1, 3 "and 5" clause a) of the Agreement that delegates powers to the Deputy Directors General. Coordinator, Directors Qiviqtanalp ?. Titles of the Regional Offices, Divisional Deputy Directors, Departmental Coordinators and other subordinates of the Insbtutq-Mextearfo dB Industrial Property. (DOF 12/15/1999, amended on 02/04/2000, 07/29/2004, 08/04/2004 and 09/13/2007)
This letter 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 Electronic Payment and 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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Original string:
NAHANNY MARISOL CANAL REYES | 00001000000403252793 | Administration Service
Tax | 1695 || MX / 2018/79471 | MX / a / 2012/015281 | PCT patent title | 1223 | GAGV | Page (s) | 7qAVhzOK7K27LfR8rlmqeDOOWeg =
Digital stamp:
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MX / 2018/79471
353133 i
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ROTARY AIR CONNECTION WITH CENTRAL VALVE
FOR TIRE INFLATION SYSTEM
FIELD OF THE INVENTION
The apparatus described generally relates to automatic vehicle tire inflation systems.
BACKGROUND OF THE INVENTION
Automatic tire inflation systems can be used to control tire pressure in vehicles by adding or releasing air from vehicle tires. Automatic tire inflation systems can provide pressurized air from a pressurized air source to vehicle tires to maintain tire pressure at a desired pressure level whether the tires are stationary or spinning. Automatic tire inflation systems can use a variety of regulators, air conductors, and rotating air connections to provide pressurized air to the tires. Automatic tire inflation systems can also use one or more valves to control the direction, speed, and volume of the air flow. There is a need for a valve arrangement to improve control of air flow.
SUMMARY OF THE INVENTION
In one embodiment, a rotary air connection for an automatic tire inflation system, the automatic tire inflation system having an air pressure source, and the rotary air connection may comprise a stationary portion having a first channel in the same; a rotating portion rotatably mounted to the stationary portion, the rotating portion having a second channel therein in fluid communication with the first channel, the first channel and the second channel together forming a central channel, and a one-way check valve positioned in the central channel so as to allow fluid to flow from the air pressure source in one direction to the central channel but not in the
IM Pl<sup>z</sup>
INSTITUTE •• rn. . 'i
opposite direction towards the air pressure source. The one-way check valve ^ Míálícte. _ be placed in one of the first channel of the stationary portion and the second channel of the rotating ^ ________ portion.
In one embodiment, the stationary portion may comprise a stator and the rotating portion may comprise a tea body and the stator and tea body may be in fluid communication through a rotating tube and the first stator channel, the tube and the second channel of the tea body together can form the central channel. A one-way check valve can be placed in one of the first channel of the stator, the tube and the second channel of the tea body.
In another embodiment, the stationary portion may comprise a shaft, and the rotating portion may comprise a hubcap, the first channel of the shaft and the second channel of the hubcap together may form the center channel. A one-way check valve can be placed in one of the first channel of the shaft and the second channel of the hubcap.
In yet another embodiment, the stationary portion may comprise a shaft and the rotatable portion may comprise a housing having a graphite element placed therein, the graphite element being driven against the shaft to form an obverse seal and the first channel of the shaft and the second channel of the graphite element together can form the central channel. A one-way check valve can be placed in one of the first channel of the shaft and the second channel of the graphite element.
In a further embodiment, the stationary portion may comprise a stator and the rotatable portion may comprise a tube having a tea body, and the first channel of the stator and the second channel of the tube and the tea body together to form the center channel. A one-way check valve can be placed in one of the first stator channel and the second channel of the tube and the tea body.
BRIEF DESCRIPTION OF THE DRAWINGS
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MMUCAHV INSTITUTE. PE LA PKO'IElAÜ INDUSTRIAL
<img file="MX359133B_D0006.tif" />
Figure 1 illustrates one embodiment of a vehicle that has an automatic tire inflation system.
Figure 2 illustrates the automatic tire inflation system of Figure 1 in greater detail.
Figures 3A and 3B illustrate modalities of hollow and solid axis spindles.
Figures 4A and 4B illustrate one embodiment of a fixing shaft.
Figure 5 illustrates one embodiment of a rotary air connection having a central valve.
Figure 6 illustrates another embodiment of a rotary air connection having a central valve.
Figure 7 illustrates yet another embodiment of a rotary air connection having a central valve.
Figure 8 illustrates a further embodiment of a rotary air connection having a central valve.
Figure 9 illustrates a further embodiment of a rotary air connection having a central valve.
Figure 110 illustrates the rotary air connection of Figure 9 in more detail.
Figure 11 illustrates the tea body of Figure 9 in more detail.
• IMPI ¡nfrnvro mexicana * MLAFROUtOAU industrial
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DETAILED DESCRIPTION OF THE INVENTION
As can be seen in Figure 1, a vehicle 100 can comprise a truck 102 and a trailer 104. The truck 102 can include one or more driving axles 106 as part of the vehicle's power train. Truck 102 may further include a fixing axle (not shown in detail) having rotating spindles that can provide fixing capacity for vehicle 100. Trailer 104 may include one or more fixed axles (not shown). Each axle may have one or more wheels 108 mounted thereon. A pneumatic rim 110 can be mounted to each wheel 108.
Vehicle 100 may be provided with an automatic tire inflation system (as shown in Figure 2) that uses pressurized air from the vehicle's air brake system or some other source of pressurized air to keep the tires at a pressure of desired air. The automatic tire inflation system can be used to control the air pressure in one or more tires 110 mounted to the bracket (not shown), the drive 106 and the trailer axles (not shown). The automatic tire inflation system may include one or more air hoses 112 in fluid communication with each tire 110 for air communication of the air pressure source for and of one or more tires 110.
Figure 2 illustrates in greater detail multiple modalities of an automatic tire inflation system for trailer tires. A trailer 200 may include two axles 202 and 204. Some trailers may have dual tires 206 and 208 mounted on each end of the axles, as can be seen with respect to axle 202. Other trailers may have a wide-base tire 210 mounted on each axis end, as can be seen with respect to axis 204. The automatic tire inflation system may generally include a pressure regulator 214 and one or more swivel unions or swivel air connections 216 and 218 mounted on or near the ends of the axle as described in greater
<img file="MX359133B_D0008.tif" />
I IL Jl V;
detail later. Pressure regulator 214 can receive pressurized air! Jfa> · -.
OF PROPERTY • Τίίά. / Ϋ?
INDUSTRIAL air pressure 220 through duct 212. Air pressure source 220 may comprise, for example, an air supply from the vehicle air brake system, or a booster or booster pump. Pressure regulator 214 can control or reduce the air pressure of air pressure source 220 to an appropriate air pressure level to inflate tires 206, 208, 210, such as 110 psi. Pressurized air can flow from pressure regulator 214 through line 222 to axes 202 and 204.
Shafts 202 and 204 can be completely or partially solid or hollow and can be configured in a variety of ways. For illustration purposes only, axes 202 and 204 are hollow. For example, in some embodiments, a shaft may comprise a solid bar that has a spindle attached to each end (not shown). The axle spindles can be configured to allow mounting of the wheel bearings on which a hub can be rotatably mounted (not shown). In other embodiments, a shaft may comprise a hollow tube that has a spindle attached to each end. The spindles can be hollow, resulting in a hollow shaft that opens at each end, as can be seen in the embodiment of Figure 3A. Alternatively, the spindles can be completely or partially solid, resulting in a hollow shaft that closes at each end, as can be seen in the embodiment of Figure 3B.
As can be seen in a cross-sectional view of the embodiment of Figure 3A, a hub spindle 300 can be attached to a hollow tube (not shown) to form a hollow shaft. A wheel end assembly can be mounted to the hollow spindle 300. The wheel end assembly can include wheel bearings 302 and 304 and a hub 306 mounted to the wheel bearings 302 and 304 to allow rotation of the hub 306 near the spindle. 300. Wheel bearings 302 and 304 can be retained in the hollow spindle 300 by one or more spindle nuts 308, which can be separated by a washer 310. Hub 306 can have threaded bolt holes 312 to allow the hubcap (not shown) to be mounted to hub 306 so as to cover wheel bearings 302 and 304 from contamination. A 314 bearing seal can also be provided against> V «r» W
IMPIú ·
MEXICAN INSTITUTE.
302 inner wheel bearing to seal the inner side of the end assembly<sub>I</sub>j ^^^ contamination. Open end 316 can be sealed in a way that allows hollow shaft 300 to hold pressurized air and support air ducts or rotary air connections (or components thereof), for example with a cap or cap disclosed in one of the patents
Americans Nos. 5,584,949; 5,769,979; 6,131,631; 6,394,556 and 6,938,658. The open end
316 it can also be provided with a cap or plug that can further serve to support the air ducts or rotating air connections (or components thereof) such that they seal the hollow shaft 300 to hold the pressurized air, such as a plug or cover disclosed in one of US Patents Nos. 6,325,124 and 7,273,082.
As can be seen in a cross-sectional view of the embodiment of Figure 3B, a solid closed-end spindle 350 can be attached to a hollow tube (not shown) to form a hollow shaft. A wheel end assembly can be mounted to the 350 solid spindle. The wheel end assembly may include wheel bearings 352 and 354 and a hub 356 mounted to wheel bearings 352 and 354 to allow rotation of hub 356 mounted to wheel bearings 352 and 354 to allow rotation of hub 356. close to spindle 350. Wheel bearings 352 and 354 can be retained on solid spindle 350 by one or more spindle nuts 358, which can be separated by a washer 360. Hub 356 may have threaded bolt holes 362 to allow a hubcap (not shown) to mount to hub 356 so as to cover wheel bearings 352 and 354 from contamination. A bearing seal 364 can also be provided against the inner wheel bearing 352 to seal the inner side of the wheel end assembly from contamination. In this embodiment, the solid spindle 350 has a closed end 366 that seals the hollow shaft.
Returning to the modalities of Figure 2, shafts 202 and 204 can be hollow sealed shafts. In one embodiment, shaft 204 can be hollow and can be sealed to serve as a conduit for pressurized air. Air duct 222 can be sealed connected to shaft 204 to allow pressurized air to flow from pressure regulator 214 to shaft 204. Air
<img file="MX359133B_D0009.tif" />
<img file="MX359133B_D0010.tif" />
Η
V.
Pressurized can flow through shaft 204 for a rotary air connection 216 connected at or near the end of the spindle as described in greater detail below. An air hose 224 can be connected to rotary air connection 216 to the valve flow (not shown) of wheel 209, to which tire 210 is further mounted, allowing pressurized air to flow to and from tire 210 .
In some embodiments, air duct 222 can be sealed connected to a tea 226 to allow pressurized air to flow from both axis 204 to axis 202. An air duct 228 can allow pressurized air to flow from tea 226 to duct 230. positioned on shaft 202. Shaft 202 can carry an air duct 230 to communicate pressurized air to rotary air connection 218, as described in US Patent Nos. 6,325,124 and 7,273,082. Air hoses 232 can connect rotary air connection 218 to valve flows from wheels 211 to which tires 206 and 208 are mounted, further allowing pressurized air to flow to and from tires 206 and 208. In other embodiments, if axis 202 is solid, then a channel may be drilled on axis 202 to allow positioning of all or part of conduit 230 within axis 202.
As noted above, automatic tire inflation systems can be used for clamping axles, too. Now referring to Figures 4A and 4B, a wheel end assembly may be mounted to a clamping spindle hub 400. The wheel end assembly may include wheel bearings 402 and 404, and a hub (not shown) mounted to wheel bearings 402 and 404 to allow hub rotation near spindle 400. The wheel bearings 402 and 404 can be retained on the other spindle of the fixing shaft 400 by one or more spindle nuts 408, which can seat against a washer 406. A cotter pin 410 can be inserted into the spindle of the drive shaft. clamp 400 to ensure that spindle nut 408 does not loosen on clamp spindle 400. A bearing seal 412 can also be provided against the inner wheel bracket 402 to seal wheel bearing 402 and 404 from contamination. In this embodiment, spindle 400 can be solid. In some embodiments, as can be seen in the embodiment of Figure 4B; one channel 452 can
<img file="MX359133B_D0011.tif" />
bore in the 450 spindle along with the tire rotation axis. An air cUllUllUlU can- ”run from an automatic tire inflation system pressure regulator through channel 452 to a swivel air connection (not shown) that can be mounted on or near the end of the spindle of the fixing shaft 400 . In other embodiments, channel 452 can be sealed at each end to serve as a pressurized air duct like the previously disclosed sealed hollow shaft 204.
Similarly, automatic tire inflation systems can be used to drive the axles (not shown), and air ducts and channels can be provided in the drive axles to allow air to flow from a pressure regulator 214 to a pressure connection. rotary air, for example as disclosed in US Patent Nos. 5,377,736 and 7,690,412. In still other embodiments, again referring to Figure 2, the air passages (not shown) may run from the pressure regulator 214 along the exterior of the vehicle trailer 200, and connected to the rotating air connections 216 and 218. In addition, an automatic tire inflation system can be adapted to work with a variety of axles, whether solid or hollow, sealed or unsealed or fixed, driven or clamping.
Swivel air connections can be provided in a variety of configurations. Figure 5 illustrates one embodiment of a rotary air connection or rotary union 500, in the manner disclosed in US Patent No. 6,698,482. As can be seen in Figure 5, a hollow shaft 502 can be sealed at one end with a plug 504 having a seal 506, such as disclosed in US Patent No. 6,131,631, if shaft 502 is to be used as a pressurized air duct. In other embodiments, an unsealed plug (not shown) can be positioned on shaft 502 to allow mounting of a rotary air connection 500 along the center axis of shaft 502. In embodiments in which shaft 502 will not serve as a pressurized air duct, an air duct (not shown) may be positioned within shaft 502 to allow mounting of a rotary air connection 500 to wv— n — Trrvt- í · - ·, ··. *.? - ·.,>? ..
<img file="MX359133B_D0012.tif" />
along the central axis of axis 502. In modalities in which axis 502 will not work ^ ó'Hi'ó
<img file="MX359133B_D0013.tif" />
pressurized air duct, an air duct (not shown) can
<img file="MX359133B_D0014.tif" />
502 to supply the pressurized air for rotary air connection 500. In still other embodiments, shaft 502 may be a driving shaft, a clamping shaft (such as that in Figure 4), or a solid shaft (such as that of Figure 3B) having a channel adapted to receive a rotary air connection 500.
In the embodiment of Figure 5, the rotary air connection 500 may comprise a stator 508, a rotating tube 510, and a rotating tee body 512. The stator 508 may be mounted on the plug 504, such as by threaded connection 514 If shaft 502 is to be used as a pressurized air duct, then stator 508 can be sealed mounted on plug 504. In other embodiments, stator 508 can be mounted directly to a channel provided on a shaft such as a clamping shaft. Stator 508 may comprise a stationary portion of rotary air connection 500. Stator 508 may further comprise channel 516 in which rotary tube 510 can be positioned and a first seal 518, such as an O-ring or edge seal, it can circulate channel 516 and sealingly couple a first end 520 of rotary tube 510. The first seal 518 can allow the rotating tube 510 to rotate the pivot and translate the stator 508 axially relative, yet substantially prevent pressurized air from passing between the stator 508 and the rotating tube 510 into the space within the hubcap 528. In some embodiments, stator 508 may further comprise a coating tube 522 and filter 524 such that it can substantially prevent debris within shaft 502 from contaminating rotary air connection 500. In addition, pressurized air in shaft 502 can flow through shaft 502, through filter 524 and liner tube 522, and into swivel tube 510. In embodiments where shaft 502 is not sealed, an air duct (not shown) can be positioned within shaft 502 and sealed connected to stator 508 without using a sealing tube 522 or filter 524.
<img file="MX359133B_D0015.tif" />
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MEXICAN INSTITUTE í
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A second end 526 of rotary tube 510 can be positioned in cuS ^ WWté 55-2 ..- Tea body 512 can be mounted to hubcap 528, which can attic .do.,.
vehicle (not shown). Furthermore, the tea body 512 can rotate with the hubcap 528. The tea body 512 can further comprise a channel 530 in which a second end 526 of the rotating tube 510 can be placed and a second seal 532, such as an O-ring or edge seal, can circulate center channel 530 and sealingly couple second end 526 of rotary tube 510.
One or both of the tea body 512 and the tube 510 may comprise a rotatable portion of the rotary air connection 500. The second seal 532 may allow the rotatable tube 510 to rotate the pivot and translate axially relative to the body and translate axially relative to the body. 512, still substantially preventing pressurized air from passing between the tea body 512 and the rotating tube 510 into the space within the hubcap 528. The second end 526 of the rotating tube 510 can be supported in the tea body 512 by a cover 534, and can be supported against a bearing 536. Channel 530 can be in fluid communication with a tea channel 538, to which one or More air hoses (not shown) can be connected for air communication to and from vehicle tires. Tea channel 538 can be oriented substantially perpendicularly or at some angle appropriate to center channel 530. Also, pressurized air can flow from shaft 502 through swivel tube 510, and from swivel tube 510 through channel 530 to tea channel 538. Swivel tube 510 can be rigid or flexible, or comprise one or more components. flexible or rigid to accommodate misalignment of the wheel (not shown) and axle 502 with respect to the axis of wheel rotation and the center axis of axle 502. One or more of the tea body channels 530, tube 510, and stator channel 516 may from a center channel at swivel 500.
Rotating air connection 500 can be improved by positioning a one-way check valve 540 within channel 530 to allow flow from axle 502 through tea channel 538 to vehicle tires, but not from vehicle tires again. through check valve 540 on shaft 502. If a tire is under-inflated, for example, it has a lower air pressure than that of the air provided by the air pressure source of the automatic tire inflation system, the air can flow from axle 502,
<img file="MX359133B_D0016.tif" />
into the rotary air connection 500, through the check valve 040 and into the tea channel 538 for the vehicle tires until the tire pressure increases to substantially the pressure allowed by the pressure regulator. As the pressure in the tires reaches the pressure of the air source, the check valve 540 can close and remain closed until the tire pressure drops again so that the imbalance of air pressure opens the check valve 540. However, if axle 502 becomes depressurized or rotary air connection 500 drops to receive pressurized air, valve 540 will close or remain closed to prevent air in the vehicle tires (not shown) from flowing back through of the 500 swivel air connection and resulting in flat tires. In other embodiments, check valve 540 can be positioned within stator channel 516, swivel tube 510, or liner tube 522. Furthermore, the rotary air connection 500 may comprise a check valve 540 positioned in a variety of positions within a central channel of the rotary air connection 500, whether in the tea body 512, the stator 508 or in the tube. swivel 510 or overcoat tube 522.
In some embodiments, the tea body 512 may have an air hose (not shown) connected to each end 538A and 538B, the tea channel 538 so as to allow fluid communication of the rotary air connection 500 with the tires of the vehicle (not shown). Alternatively, for truck trailers that have a single wide tire instead of dual tires, as illustrated in Figure 2, a single air hose can be used to connect the single wide tire to one of the 538A or 538B ends of the tea 538. In such case, the other of the ends 538A or 538B of the tea channel 538 can be sealed, such as a plug or pressure relief valve (not shown) can be sealed connected to the other end, or a pressure monitoring sensor of Cordless tires known to those of skill in the art (not shown) can be connected to the other end, or a digital or analog tire pressure gauge (not shown) can be sealed connected to the other end. Alternatively, for wide tire only applications, the 538 Tea Channel
<img file="MX359133B_D0017.tif" />
it can be provided with only one end 538A or 538B. In other Jn s, 4ar ^ íÍftíja- <'<sup>;</sup>TO
INSTITUTO MSXICANü '' go ώ
FROM PMOHIWM & illustrated in Figure 6, for dual tire applications requiring $ faith<sup>or</sup>Air lines (not shown) are attached to the ends 638A and 638B of the provided in the tea body 612 in fluid communication with the tea channel 638 to allow the sealing connection of a pressure relief valve ( not shown), wireless tire pressure and temperature monitoring sensor (not shown) for port
639. For example, a tire temperature and / or pressure monitoring sensor may include a wireless tire sensor (TPMS) from the SmarTire® / SmartWave® tire pressure monitoring system made by Bendix Commercial Vehicle Systems. Port 639, the tea channel
638 and the ends of the tea channel 638A and 638B can be oriented in any number of appropriate ways, so as to balance the mass of the various attachments, or to accommodate a variety of sizes and shapes of hose and attachments.
Now referring to Figure 6, which may include elements of the embodiments of Figure 5, the check valve 640 (as with the check valve described in other embodiments herein) may be a normally one-way valve, such as the Schrader valve commonly found on valve stems or some other appropriate one-way valves. Check valve 640 can allow air to flow in one direction and can in some embodiments be provided with an electronic or manual mechanism to fully open valve 640 and allow air to flow in two directions. Also, when the automatic tire inflation system is deactivated or if the regulator drops or any damage occurs to the air lines providing air to the axle 602 or rotary air connection 600, then the vehicle tires will not deflate. Similarly, if one or more tires becomes over-pressurized, such as can occur when one side of a trailer is exposed to the sun, excess tire pressure may not result in air flow back into axle 602 and increasing pressure. of the tires on the rims at the other end of the 602 axle.
Figure 7 illustrates another embodiment of an air connection.
<img file="MX359133B_D0018.tif" />
one-way valve 732. In Figure 7, the rotary air connection or the rotary union 700 can be integrated within the hub cap 702, as disclosed eñ'Tá ^ SolfciTud ^ e'l ^ uÉjí ^ áción ''
No. 2009/0283190 and may comprise a shaft 704 having a channel 734 and a rotatable hubcap 702 near the shaft 704. The shaft 704 may comprise a stationary portion of the rotary air connection 700 and the hubcap 702 may comprise a rotatable portion of the same. In the embodiment of Figure 7, a hollow shaft 706 may have a tight fitting plug 708 within the bore of shaft 710. An air duct 712 can be positioned in the shaft bore 710 and can be sealed connected to a first end 714 of shaft 704 via air duct connector 716. In the embodiment of Figure 7, shaft 704 can be threadedly attached to the connector air duct 716 to allow removal of the rotary air connection 700 from the air duct 712. A second end 718 of shaft 704 can be placed in channel 720 of hubcap 702 and can be rotatably mounted in channel 720 using bearings 722. Bearings 722 and shaft 704 can be retained in hubcap 702 by the use of snap rings, nuts closure, friction adjustment or some other means known in the art. A seal 724 such as an O-ring edge seal can circulate channel 720 and sealingly engage second end 718 of shaft 704. Hubcap 702 can be mounted to a hub 726 by, for example, one or more screws 733. Hub 726 can be mounted on bearings 728 to shaft 706 for rotation thereon. Bearings 728 may allow hubcap 702 to rotate near shaft 704 as hub 726 rotates near axis 706. In other embodiments, shaft 704 may be any appropriate shape and need not be the shape interpreted in Figure 7. One or more of the channels 734, the channel 720, the air duct connection 716 and the air duct may from the center channel of the swivel joint 700.
One or more of the tea channels 730 can be provided in the hubcap in fluid communication with channel 720. Tea channel 730 can be oriented substantially perpendicularly or at any appropriate angle to center channel 720. An air hose (not shown) can connect the tea channel to a vehicle tire (not shown).
<img file="MX359133B_D0019.tif" />
In addition, pressurized air can flow through a swivel air connection duct 700 and out of the tires through the CanaP8®SS5S ^^ ¡^
Rotating air connection 700 can be improved by positioning a one-way check valve 732 within channel 734 of shaft 704 so as to allow air to flow from air duct 712 through tea channel 730 to vehicle tires (not shown), but not from the vehicle tires again through check valve 732 in channel 734. If a tire is under-deflated, i.e. it has a lower air pressure than that of the air provided by the inflation system air pressure source, air can flow from the air duct 712 into the rotating air connection 700 through check valve 732 and out of the tea channel 720 to the vehicle tires until the tire pressure substantially increases the pressure allowed by the pressure regulator. As the pressure in the tires reaches the pressure of the air source, the check valve 732 can close and remain closed until the tire pressure drops enough that the air imbalance opens the check valve 732. However, if the air duct 712 becomes depressurized or the rotary air connection 700 drops to receive the pressurized air, the check valve 732 will close or remain closed to prevent air in the vehicle tires from flowing back through of the 700 swivel air connection and resulting in flat tires. In other embodiments, the check valve 732 can be positioned within the air duct connector 716 or the air duct 712. In still other embodiments, valve 732 may be positioned within channel 720 adjacent to tea channel 730. In addition, rotary air connection 700 may comprise a valve positioned in a variety of positions within a central channel of rotary air connection. 700, either in shaft channel 734 or in channel 720 of hubcap 702 or elsewhere in the center channel.
Figure 8 illustrates another embodiment of a rotary air connection having a one-way valve. In Figure 8, the swivel air connection or swivel joint 800 may comprise a shaft 802 and a graphic element 826 positioned within the swivel housing 804 near the shaft 802, such as that disclosed in US Patent No. Ϊ n <rnvro msxk ^ o
802 may comprise a stationary portion of the air connection g¡r§f <xwS © ®4iEi
<img file="MX359133B_D0020.tif" />
In the embodiment of Figure 8, a hollow shaft 806 may have a plug 808 sealing the bore of the pjp—. rr-r-iw810. An air duct 812 can be positioned in the bore of shaft 810 and can extend through plug 808, which may have a fitting 808a to secure air duct 812 together with the central axis of shaft 806. Air duct 812 can Sealedly connected to a first end 814 of shaft 802 via an air duct connector 816. Shaft 802 may have a channel 820 in fluid communication with air duct 812. A second end 818 of shaft 802 may be placed in housing 804. Second end 818 of shaft 802 may be rotatably mounted in housing 804 using bearings 822. Housing 804 can be mounted to a hubcap 824 for rotation therein.
Housing 804 may contain a graphite element 826 which can be spring-driven 828 against second end 818 of shaft 802 to form a front seal 830. One or both of housing 8014 and graphite element 826 may comprise a rotatable portion of the rotary air connection 800. The graphite element 826 may have a channel 832 in fluid communication with the central channel 820 of the shaft 802. A tea channel 834 can be provided in housing 804 in fluid communication with channel 832 of graphite element 826. Tea channel 834 can be oriented substantially perpendicularly or at an appropriate angle to channel 832 of graphite element 826. One or more Air hoses (not shown) can be connected to the 834 tea channel for one or more vehicle tires (not shown). In addition, pressurized air can flow through air duct 812, through swivel air connection 800, and out of the tires through tea duct 834. Channel 832, channel 820, and air duct 812 they may comprise a central channel of the rotary air connection 800.
Rotary air connection 800 can be improved by positioning a one-way valve 836 within channel 820 of shaft 802 so as to allow air to flow from the
WJ-J air duct 812 through the tea channel 834 to the tires of the vehicle tires again through the valve 836 in the under-deflation channel, that is, it has a lower air pressure than the air provided by the air pressure source of the automatic tire inflation system, air can flow from the air duct 812, inside the rotary air connection 800, through valve 836 and out of tea channel 834 to vehicle tires until the pressure substantially increases the pressure allowed by the pressure regulator. As the pressure in the tires reaches the air source pressure, valve 836 will close or remain closed to prevent air in the vehicle tires from flowing back through the swivel air connection 800 and resulting in flat tires. In other embodiments, valve 836 may be placed within a sleeve (not shown) in the center bore 832 of graphite element 826 or within air duct 812. In addition, rotary air connection 800 may comprise a check valve positioned in a variety of positions within a center channel of the rotary air connection 800, either in the shaft 802 or in a rotary housing 804 or somehow in the center channel.
Figure 9 illustrates yet another embodiment of a rotary air connection having a valve. In the embodiment of Figure 9, a rotary air connection 950 comprises a stator 9502 and a tube 954. Stator 952 may comprise a stationary portion of the rotary air connection 950 and tube 954 may comprise a rotatable portion thereof. . An air duct 956 can be placed within a hollow shaft 958 and can be sealed connected to stator 952. Stator 952 can be mounted to a plug 959 that is press fit within shaft 958. Stator 952 can be mounted to plug 959 by means of three bolts 960. Alternatively, stator 952 can be press fit directly into shaft 958. The Tube 957 may comprise a tea body 962. Tube 954 may include a flexible portion 964 to accommodate outside the center mount of the tea body 962 to a hub cap 966 mounted to a hub (not shown). Tube 954 may include an accessory 968 adapted for the removable attachment of flexible portion 964 of tube 954 to wheel hubs (not shown) for
<img file="MX359133B_D0021.tif" />
allow fluid communication of air from air duct 956 to trjv ^^ l ^ o | e ^ i ^ e INSTITUTO MIK1CAMO τ,) i rotating air 950 to air hoses 970 and 972 so that they inflate<sup>0</sup>^ vehicle (not shown). The 970 and 972 air hoses can be removably attached to the 962 tea body using the nuts on the 974 and 976 hoses.
Figure 10 further illustrates the rotary air connection 950 of Figure 9 in greater detail. As can be seen in the embodiment of Figure 10, stator 952 may include a base 178 and a cover 180 that can be fastened together with screws 960 (shown in Figure 9) insertable through screw holes 182. Base 178 may comprise a beard 184 that can be inserted into air duct 856 (shown in Figure 9) to create a sealed connection between stator 950 and air duct 956. A ring or 186 or other appropriate seal can be placed between base 178 and cover 180 to substantially prevent pressurized air from leaking between base 178 and cover 180. Tube 954 can be rotatably mounted to stator 952 on bearings 188. Furthermore, with reference to Figures 9 and 10, bearings 188 allow tube 954 to rotate relative to stator 182 as the hub (not shown) rotates. An o-ring 183 or other seal may surround tube 954 to provide a sealed connection between tube 954 and stator 952.
The rotary air connection 950 can be improved by positioning a one-way check valve 190 within the tube 954 so that air flows from the air duct 956 through the rotary air connection 950 to the air hoses 970 and 972 and so on on the vehicle tires, but not on the vehicle tires again through valve 190 to air duct 956. If a tire is under-deflated, i.e. it has a lower air pressure than the air provided by the inflation system air pressure source, air can flow from the air duct 956, into the air connection rotating 950, through valve 190 and out of air hoses 970 and 972 to the vehicle tires until the tire pressure substantially increases the pressure allowed by the pressure regulator. As the pressure in the tires reaches the pressure of the air source, valve 190 can be closed
<img file="MX359133B_D0022.tif" />
new. However, if air duct 956 becomes depressurized or rotary air connection 950 drops to receive pressurized air, valve 190 will close or remain closed to prevent air in the vehicle tires from flowing back through the 950 swivel air connection and resulting in flat tires. In other embodiments, valve 190 can be positioned within stator 952, such as within beard 184 or within air duct 956 to prevent air from flowing back to the air pressure source.
Figure 11 illustrates the tea body 962 of tube 954 of Figure 9 in greater detail. As can be seen in the embodiment of Figure 11, the tea body 962 may comprise a channel 250 that allows fluid communication of stator 952 through tube 954 to a tea channel 252. A tea nut 253 can allow the attachment removable from tea body 962 to fitting 968 (shown in Figure 9) of a flexible portion 964 of tube 954. Tea channel 252 can be oriented substantially perpendicularly or at an appropriate angle to center channel 250. Air hoses 970 and 972 (shown in Figure 9) can be connected to tea channel 252 for vehicle tires. In addition, pressurized air can flow through air duct 956, through swivel air connection 950, and out of the tires through tea channel 252.
In alternate embodiments, the rotary air connection 950 can be enhanced by positioning a one-way check valve 256 within channel 250 of the tea body 962 to allow air to flow from the air duct 956 through the air connection. swivel 950 for air hoses 970 and 972 and so on vehicle tires (not shown) but not vehicle tires again through valve 256 for air duct 956. One or more of the tea body channel 250, tube 954, stator 952 and air duct may of a central channel of the rotary air connection 950. In addition, the rotary air connection 950 may comprise a valve positioned in a variety of
IMPIAS.
Mexican institute j,.,
FROM PROPERTY Qíb »^> · 'P positions within a central channel of the rotary air connection 950, either rotary 954 or stator 952.
<img file="MX359133B_D0023.tif" />
Providing a check valve in a center channel of the swivel joint of an automatic inflation system can provide a way to prevent deflation of vehicle tires if air pressure drops upward from the swivel joint. The placement of a check valve in a center channel can substantially reduce material and manufacturing costs compared to the placement of check valves in the downstream air hoses of a rotary union. Also, the use of a check valve as described in this document can prevent over-pressurization of one or more tires from adversely affecting non-over-inflated tires.
Although the present invention and its advantages have been described in detail, it should be understood that various changes, substitutions or alterations can be made herein without departing from the invention as defined by the appended claims. Furthermore, the scope of the present application is not intended to be limited to the particular modalities of the process, machine, manufacturing, composition or matter, means, methods and steps described in the specification. As will be quickly appreciated from the disclosure, processes, machines, manufacturing, compositions of matter, means, methods or stages, currently existing or later being developed from developing substantially the same function or achieving substantially the same result as the corresponding modalities. described in this document can be used. Accordingly, the appended claims are intended to be included within the scope of such processes, machines, manufacturing, compositions of matter, means, methods, or steps.
<img file="MX359133B_D0024.tif" />
Contents12
35 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
14 members in 7 offices
Priority claims9
| Document | Office | Kind | Date |
|---|---|---|---|
| 35694710 | United States of America | P | |
| 35694710 | United States of America | P | |
| 61356947 | United States of America | – | |
| 2011041305 | United States of America | W | |
| 2011041305 | United States of America | W | |
| 61356947 | – | – | – |
| PCTUS2011041305 | – | – | – |
| US20100356947P | – | – | – |
| WO2011US41305 | – | – | – |
Members14
| Document | Office | Kind | |
|---|---|---|---|
| WO2011163274A2 | World Intellectual Property Organization (WIPO) | A2 | |
| AU2011271099A1 | Australia | A1 | |
| MX2012015281A | Mexico | A | |
| US2013087262A1 | United States of America | A1 | |
| EP2582977A2 | European Patent Office (EPO) | A2 | |
| CN103282655A | China | A | |
| WO2011163274A3 | World Intellectual Property Organization (WIPO) | A3 | |
| AU2011271099B2 | Australia | B2 | |
| CN103282655B | China | B | |
| BR112012033114A2 | Brazil | A2 | |
| EP2582977A4 | European Patent Office (EPO) | A4 | |
| US9908373B2 | United States of America | B2 | |
| MX359133BThis record | Mexico | B | |
| BR112012033114B1 | Brazil | B1 |
2 legal events, as the office reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | |
|---|---|---|
| Grant or registrationFG | FG | |
| Correction or change in generalHH | HH |
Numbers
- Publication
- 359133
- Publication, DOCDB
- 359133
- Publication, EPODOC
- MX359133
- Application
- 2012015281
- Application, DOCDB
- 2012015281
- Application, EPODOC
- MX20120015281
Titles
- Spanish
- CONEXIÓN DE AIRE GIRATORIA CON VÁLVULA CENTRAL PARA SISTEMA DE INFLACIÓN DE NEUMÁTICOS.
Classification
- CPC, 6
- B60C23/00336
- B60C23/00345
- B60C23/00318
- B60C23/00354
- B60C23/00363
- B60C23/00
- IPC, 1
- B60C23 00