Patent ID: 8783314

Claim:
A tire pressure control system for a motor vehicle, comprising: a rotary feed through having a stator and a rotor for transferring compressed air from a compressed air source on a vehicle side to the rotor, said rotor designed to support a wheel; the rotary feed through further comprising an annular chamber located between the rotor and the stator, the annular chamber can be sealed off by activatable seals into which both a stator side and a rotor side air channel open; the activatable seals can be activated for the purpose of compressed air transfer and are disposed spaced apart in an axial arrangement having approximately the same radial spacing from the rotary axis of the rotor; an annular groove present between the activatable seals and open to the rotor in the radial direction which engages a rotor flange, said annular groove having opposite outer sides; wherein the activatable seals operate facing each other and act against the opposite outer sides of the annular groove for the purpose of sealing off the annular chamber; and the part of the annular groove is sealed off from the activated seals forms the annular chamber.