Patent ID: 6067848
Filing Date: 2000-05-30
Classification: G01M

Abstract:
A portable test apparatus for measuring nonuniformity of a tire/wheel assembly in situ on a wheel bearing hub of a vehicle, comprisinga probe for monitoring deflections of a surface of the tire/wheel assembly during rotation of the tire/wheel assembly and producing a first output signal indicative of the surface deflections;a holder for holding the probe adjacent the surface of the tire/wheel assembly to be monitored for uniformity;an indexing device for producing a second output signal indicative of the rotational position of the tire/wheel assembly during rotation thereof, the indexing device having an attachment mechanism for removable coupling to the tire/wheel assembly; andan electronic processor for receiving and processing the first and second output signals from the probe and indexing device to provide an output indicative of at least one parameter representative of the nonuniformity of the tire/wheel assembly.