A rotary joint assembly for a tire inflation system for a vehicle includes a stationary portion defining a first fluid passage. The stationary portion includes a support portion and having a first annular sealing face. The first fluid passage ending in the first annular sealing face. The assembly also includes at least one bearing and a rotatable portion rotatably mounted on the support portion by way of the at least one bearing. The rotatable portion defines a second fluid passage and has a second annular sealing face, the second fluid passage ending in the second annular sealing face. The rotatable portion defines an axis of rotation of the rotatable portion and a radial direction oriented perpendicular to the axis of rotation. The at least one bearing supporting an inner face of the rotatable portion, wherein the inner face of the rotatable portion faces toward the axis of rotation. An annular seal chamber is radially disposed between the first annular sealing face and the second annular sealing face and provides fluid communication between the first fluid passage and the second fluid passage. The at least one bearing and the annular seal chamber at least partially overlap along an axial direction oriented in parallel to the axis of rotation.

An axle assembly includes a connection assembly having a stationary portion and a rotary portion. The stationary portion is configured to couple to an inlet airflow assembly configured to be non-movably coupled to a beam housing, the rotary portion is configured to couple to an outlet airflow assembly configured to be non-movably coupled to a steering knuckle, the stationary portion forms a cavity configured to facilitate flow of pressurized air from the inlet airflow assembly to the rotary portion, and the rotary portion forms an airflow path configured to facilitate flow of the pressurized air from the cavity to the outlet airflow assembly.

The present disclosure relates a device that includes a rotary union body. Included with the rotary union body is a circumferential air channel, a seal channel, and an intake air channel. The intake air channel is connected to the circumferential air channel. Also disclosed is a hub assembly system that includes a hub and a rotary union body. Included with the rotary union body is a circumferential air channel, a seal channel and an intake air channel. Here the intake air channel is connected to the circumferential air channel.

A wheel end high-temperature warning system for a vehicle having a wheel-end assembly mounted to an axle is described. The system may include a first temperature sensor including a sensor head configured for mounting within a spindle section of the wheel end assembly, the sensor head in a heat exchange relationship with a bearings of the wheel-end assembly. The system may further include a transmitter disposed on the axle to which the wheel-end assembly is mounted, the transmitter being configured to receive a first sensor signal from the first temperature sensor indicative of a wheel-end temperature and transmit the signal to a receiver. A vehicle data acquisition module may be coupled to the receiver, the data acquisition system being programmed to receive the first sensor signal and process the signal to determine a measured temperature of the spindle.

The present disclosure relates a device that includes a rotary union body. Included with the rotary union body is a circumferential air channel, a seal channel, and an intake air channel. The intake air channel is connected to the circumferential air channel. Also disclosed is a hub assembly system that includes a hub and a rotary union body. Included with the rotary union body is a circumferential air channel, a seal channel and an intake air channel. Here the intake air channel is connected to the circumferential air channel.

A rotary union for a tire inflation system includes an axle housing and a wheel axle rotatably mounted in the axle housing. The wheel axle has a flange for attachment of a wheel rim. The wheel axle is received by a passage socket that is connected for conjoint rotation to the wheel axle and supported by a radial bearing relative to a bearing seat within the axle housing. A compressed air duct is disposed inside a cylindrical wall of the passage socket such that the compressed air duct is connected at one end to a pressure connector mounted on the axle housing and at the other end to a tire connector mounted on the passage socket. The passage socket is sealed rotationally movably with respect to an adjacent inner side of the axle housing such that an enclosed chamber is formed between the pressure connector and the compressed air duct.

A rotary feedthrough assembly for a tire inflation system for a vehicle. The assembly may have a stationary part including a first section of a main fluid line and a first section of a pilot fluid line. A rotatable part may be rotatably mounted on the stationary part support a pneumatic tire. The rotatable part may have a second section of the main fluid line and a second section of the pilot fluid line. A first annular seal chamber may be radially disposed between the stationary part and the rotatable part. The first annular seal chamber may provide fluid communication between the first section of the main fluid line and the second section of the main fluid line. A second annular seal chamber may be radially disposed between the stationary part and the rotatable part. The second annular seal chamber may provide fluid communication between the first section of the pilot fluid line and the second section of the pilot fluid line.

A rotary transmission leadthrough is part of a tire pressure control system for a tire of a vehicle, the tire having a hub mounted in a rotatable manner on an axle, the rotary leadthrough having a stator unit mounted on the axle of the tire in such a manner that its position in the axial direction is adjustable relative to the axle. The stator unit has a disc like end member and a bearing member extending in the axial direction from the end member with a bearing surface on its outer radial surface, the end member projecting outwards in a radial direction from the bearing surface. The bearing member retains an inner bearing shell of a rolling bearing carrying the hub. A connector is mounted on the end member connected to an air supply of the tire pressure control system, and an air conduit connecting the connector with an air passage extending in the axial direction under the bearing surface. An opening in the bearing surface connects to the air passage with an air chamber arranged radially to the outside of the bearing surface. A rotor unit connects to the hub in a torque fit manner, and the rotary unit is arranged radially outside to the bearing member of the stator unit and has a connector in a radial outside position connected to the tire valve of a tire mounted on the hub. An air conduit connecting the connector with the air chamber is arranged between the rotary unit and the bearing member; and a sealing unit is arranged between the bearing surface of the stator unit and the rotary unit having at least two sealing rings held in place and arranged with a spacing between them in the axial direction, the spacing defining the air chamber.

A rotary joint is configured to transfer a fluid between two entities, one of which is in rotary motion with respect to the other. The rotary joint comprises a cylindrical internal element, apt to be fixed to the entity in rotary motion, and a plurality of annular external elements. The external elements comprise at least two head elements, at least two housing elements of respective gaskets, two bearing elements, and at least one fluid inlet. The fluid inlet is placed between said two bearing elements. Housing elements of respective gaskets are arranged externally to the bearing elements, and head elements are arranged externally to the housing elements. The gaskets define an annular shaped sealed area. The sealed area is accessible on one side through said fluid inlet and on the other side through at least one fluid passage channel passing through the body of said internal element.

A tire inflator/bleed system allows tire pressure to be adjusted using controls in a vehicle and while in motion. The inflator system includes a disk portion which rotates with a wheel, and a ring portion rotatably attached to the disk. The disk may be a spacer between the wheel and a vehicle hub, be part of the wheel, or be part of the hub. The ring portion receives air from an air supply/bleeder and is in fluid communication with the disk portion to provide the air to or from the disk portion. The disk portion is in fluid communication with a tire interior to add or remove air from the tire.