US Patent 7100433 Vehicle wheel having primary detector function

The present invention relates to a wheel rim (1), having a wheel rim bed (1a), of a vehicle wheel having a detection system for a measurement device for detecting the rotational velocity of the vehicle wheel. The detection system comprises a marking (6), running around the circumference on the wheel rim bed (1a) or integrated therein, made of a track of marks (6a, 6b, 6c), which are implemented as a profile that stiffens the wheel rim bed (1a) and are detectable without contact to detect the rotational velocity when passing a sensor (7) of a measurement device to be positioned stationary next to the vehicle wheel.