Patent ID: 6742386
Filing Date: 2004-06-01
Classification: B60C

Abstract:
An apparatus for monitoring physical variables of a tire and an axle, the apparatus comprising:(a) a vehicle wheel having a hub mounted for rotation on the axle, the tire being mounted thereon; (b) a tire pressure gauge mounted on the vehicle wheel in communication with the tire; (c) a tire temperature gauge mounted on the vehicle wheel adjacent the tire; (d) an axle temperature gauge mounted on the vehicle wheel adjacent the wheel hub; (e) a signal processor and transmitter mounted on the vehicle wheel and connected to the tire pressure gauge, the tire temperature gauge and the axle temperature gauge for collecting data from the gauge and broadcasting a radio signal comprehending values representing the data; and (f) an energization assembly including a magnetic element mounted adjacent the vehicle wheel presenting at least one magnetic pole parallel to the vehicle wheel's axis of rotation, a field coil mounted on the vehicle wheel to pass the magnetic pole periodically to induce excitation therein, and electrical filtering and supply circuitry connected to the field coil and to the signal processor and transmitter.