Zahnradfabrik Friedrichshafen, Ag.

Knorr-bremse Gmbh

Gunther Reifinger

Gerold Bieber

Alfred Magg

Christian Fuchs

A transmission shiftable to change transmission ratios by the operation of a member whose effectiveness depends upon a pressure fluid, e.g. through a valve communicating the fluid to actuators of the gear-change system, has a clutch connecting the output shaft of a prime mover as an internal-combustion engine with the input shaft of the transmission. According to the invention, the clutch-operating cylinder is connected by an entraining device with a valve controlling the pressure fluid. A lost motion may be provided between the operating member of the cylinder and the valve seats to ensure full opening of the clutch before operation of the transmission is enabled.

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Germering, Germany

Gunther Reifinger