Patent ID: 8091418

Claim:
A transmission device for a motor vehicle for transmitting signals about tire condition variables from a wheel to an electronic unit arranged in the vehicle body, wherein the tire condition variables can be detected especially by one or a plurality of sensor subassemblies ( 14 ) which are arranged in a wheel rotatably mounted at the body above the wheel hub ( 3 ), the device comprising: a coupling device is integrated into a wheel hub, which is composed of a rotor ( 6 a ) and a non-rotating stator ( 6 b ) to generate a field coupling, and whose one or more field coupling elements ( 20 , 22 , 34 a , 34 b , 39 a , 39 b ) are opposite each other, separated by a narrow air slot ( 24 ), and a signal coupling takes place by at least one of electric fields, magnetic fields, and electromagnetic fields, and least one of the rotor ( 6 a ) and the stator ( 6 b ) is subdivided in a circumferential direction into two or more sectors, with the sectors including a differing magnetic coupling for a rotational-speed-responsive field coupling of rotor ( 6 a ) and stator ( 6 b ); and wherein the two or more sectors are alternately arranged in the circumferential direction such that the field coupling has an alternating output resulting from the differing magnetic coupling.