Zf Friedrichshafen Ag

Martin Flückiger

Wolfgang Kundermann

Michael Ebenhoch

Volker Stampf

Thomas Walter

Wolfgang Großpietsch

Peter Fenn

Matthias Mülier

Wolfgang Reißer

A manually controlled shifting conversion apparatus for a multistage transmission having multiple shifting packets wherein gears for successive, non-adjacent gear ratios are located in each shifting packet and gears for successive, adjacent gear ratios are located in different shifting packets. The gears located in each shifting packet are respectively engaged by opposing axial displacements of the shifting packet controlled by a gear shift lever (). The gear shift level () has a shifting pattern wherein the shifting positions of successive gear ratios are located in opposing positions in the shifting pattern.

Manually controlled shifting conversion apparatus for a multi-stage transmission

An actuating drive for transmitting drive torque to a power takeoff, comprising a drive unit; a braking device comprising a cylindrical surface; and a wrap spring having a plurality of turns which are concentric to the cylindrical surface, a pair of ends, a first actuating area on one of the ends, and a second actuating area on one of the ends. When the drive unit exerts a drive torque in a first direction, the first actuating area is nonrotatably connected to the drive unit, the turns undergo a diameter change away from the cylindrical surface, and the second actuating area is nonrotatably connected to the power takeoff for transmitting drive torque. When the drive torque is interrupted, the turns undergo a diameter change toward the cylindrical surface and frictionally engage the cylindrical surface to block transmission of restoring torque from the power takeoff to the drive unit.

Actuating drive with a wrap spring arrangement

Growing community of inventors

Schweinfurt, Germany

Martin Flückiger