Gebr.hofmann Gmbh & Co Kg Maschinenfabrik

Gerb. Hofmann Gmbh & Co. Kg

Dr.-ing.wolfgang Schulz Messtechnik

Friedrich Wenz

Gunther Himmler

Gunter Knoll

Wolfgang Schulz

A method and an apparatus for determination of run-out of a rotating body, especially an automobile tire, without the need for mechanically contacting the rotating body. The apparatus includes a device for rotating the body, a scanning system with a transmitter for transmitting parallel rays directed toward the rotating body, a receiver to receive the residual rays not blocked by the rotating body, and an analyzer circuit for determination of variations in blockage on the basis of which run-out of the rotating body is determined.

Method and apparatus for non-contact determination of run-out of a

A method and apparatus for controlling the quality of tires, in particular automobile tires, in which a rotating tire rolls on a rolling surface of a test drum and where one force-measuring system measures the dynamic force portions and another force-measuring system measures the static force portions of the forces exerted by the rotating tire in the same flux of forces through the rolling surface of the test drum which is supported on the same bearing element of a bearing unit.

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Seeheim-Jugenheim, Germany

Friedrich Wenz