Abstract: 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.

Abstract: A rotary transmission leadthrough as part of a vehicle tire pressure regulating system, comprising a rotor structural group that can be connected in a torque-connected manner to a shaft of the vehicle which supports a wheel, and a stator structural group stationarily mounted opposite the rotary movement of the rotor structural group. A sealable conduit between the rotor structural group and the stator structural group is a path for transferring gas from the stator structural group to the rotor structural group and/or the inverse to regulate tire pressure. The rotor structural group is multipartite. A first rotor part is a closed annular body that can be pushed on the vehicle shaft. A second rotor part mounted axially to the first rotor part and connected to it in a torque-connected manner is designed as a tensioning ring for connecting the rotor structural group to the vehicle shaft in a torque-connected manner.

Abstract: The invention relates to a tire pressure control system for a motor vehicle, comprising a rotary feedthrough (7) having a stator and a rotor for transferring compressed air, fed from a compressed air source on the vehicle side to the rotor (R) designed for supporting a wheel. The rotary feedthrough (7) comprises an annular chamber (25) present between the rotor (R) and the stator (S) that can be sealed off by activatable seals (15, 16). A stator side and a rotor side air channel (8, 17) open into said chamber. The seals (15, 16) that can be activated for the purpose of compressed air transfer are disposed spaced apart in an axial arrangement having the same or approximately the same spacing from the rotary axis of the rotor (R). According to the invention, either the seals (15, 16) are designed for operating facing each other and an annular groove (18) present between the seals (15, 16) and open to the rotor (R) in the radial direction engages a rotor flange (19).

Abstract: The invention relates to a tire pressure control system for a motor vehicle, comprising a rotary feedthrough (7) having a stator and a rotor for transferring compressed air, fed from a compressed air source on the vehicle side to the rotor (R) designed for supporting a wheel. The rotary feedthrough (7) comprises an annular chamber (25) present between the rotor (R) and the stator (S) that can be sealed off by activatable seals (15, 16). A stator side and a rotor side air channel (8, 17) open into said chamber. The seals (15, 16) that can be activated for the purpose of compressed air transfer are disposed spaced apart in an axial arrangement having the same or approximately the same spacing from the rotary axis of the rotor (R). According to the invention, either the seals (15, 16) are designed for operating facing each other and an annular grove (18) present between the seals (15, 16) and open to the rotor (R) in the radial direction engages in rotor flange (19).

Abstract: A tire pressure control unit for motor vehicles with a rotary transmission leadthrough 2 for transmitting a pressure means from a part, stationary with respect to a rotatably supported wheel 3, of the motor vehicle to the rotatably supported wheel 3, wherein the rotary transmission leadthrough 2 comprises at least one chamber 14, 15 delimited by an annular body 4, 5 disposed at the stator side and by [an annular body (4, 5)] disposed at the rotor side concentrically with respect to the rotational axis of wheel 3, and wherein for sealing the at least one chamber 14, 15 sealing rings are inserted between the stator-side annular body 4 and the rotor-side annular body 5, is defined thereby that the stator-side annular body 4 and the rotor-side annular body 5 are disposed one next to the other in the axial direction with respect to the rotational axis of the wheel 3 leaving a motion gap 11, into the face facing toward the rotor-side annular body 5, of the stator-side annular body 4 for the radial sealing

Abstract: A tire pressure-controlling system is provided for vehicles in which the wheel is displaceable on the driven axle, in the axial direction, for adjusting different track widths, for example, for adapting the track width to agricultural requirements. The system includes a flexible conduit for providing pressurized air for the tire and a flexible conduit for providing a control air pressure to operate a valve located on the wheel to control pressurized air flow into the tire.