Device for determining geometrical defects in a vehicle wheel

Abstract

A device for determining geometrical defects in a vehicle wheel comprises, for measuring the eccentricity of the wheel rim (5) and of the wheel (4), means (7) to be positioned in contact alternately with the tyre (6) and with the wheel rim (5) of the wheel of which the eccentricity is to be measured, a sensor (8) for measuring the angular position assumed by said means (7) about a fixed reference point (9), and means for associating and processing the data measured by said means (7) and by said sensor (8) to determine the angle through which the tyre (6) must be rotated on the wheel rim (5) to compensate their errors of shape. Said angular sensor (8) comprises a fixed part (80) carried by a shaft (23) associated with self-centering support means (21, 19, 200, 203) arranged to position it exactly coaxial with said wheel rim, and a movable part (81) rotatably mounted on said shaft (23).

Dependencies are inferred from the claim text.