Importance

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Abstract

In the tire testing method before and after an alteration in the tire pressure a respective interferogram is produced of the tire surface using coherent radiation and the interferogram is used to obtain an information concerning any defects present in the tire is obtained. The tire testing apparatus comprises a rotatably supported shaft on which the wheel with the tire to be tested is mounted, a bearing device by which the wheel with the shaft is shiftable in longitudinal direction of the shaft, a shaft locking device by which the shaft is locked with respect to a movement in the longitudinal direction of the shaft thereafter, a guiding device by which the test head is moved in a radial direction of the wheel, a wheel locking device by which the wheel is mechanically locked when the wheel is further rotated by hand by an amount of a test segment and when the next segment is in test position in front of the test head, and a starting device by which the testing on defects of a first test segments of the tire is started.

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First Claim