Abstract: A clutch apparatus for a vehicle drive train for transmitting torque between the vehicle's engine and gearbox. Three interoperative clutch members are provided. The clutch members cooperate with clutch plates, a pressure-receiving plate, a clutch pressure plate, clutch pressure springs, and a setting device between the second and the third clutch members, for setting a back torque between the third and first clutch members by an axial displacement of the third clutch member relative to the second clutch member. The setting device has two ring elements, which are rotatable n relation to each other, with ramp segments, and having balls arranged between the ramp segments; the ramp segments have regions with ball that rise or slope in opposite directions in such a way that when the ring elements rotate in the same direction, the distance between the ramp segments is smaller than when the ring elements rotate in opposite directions.

Abstract: A clutch apparatus for a vehicle drive train for transmitting torque between the vehicle's engine and gearbox. First, second, and third clutch members cooperate with clutch plates, a pressure-receiving plate, a clutch pressure plate, clutch pressure springs, and a setting device for setting a back torque. An engagement device provided between the second clutch member and the third clutch member for bringing about a releasable engagement position between the second clutch member and the third clutch member. The second clutch member has a tubular portion on which a tubular bearing sleeve of predetermined working length is provided, and which has a radially extending rotating collar with an abutment surface on which a spring device is arranged; the spring device is for axially loading the third clutch member, and limits the path of axial displacement of the third clutch member relative to the second clutch member.

Abstract: A clutch apparatus or system for a vehicle drive train for transmitting torque between the vehicle's engine and gear change gearbox. Three interoperative clutch members are provided in the apparatus. The three clutch members cooperate with at least two clutch plates, a pressure-receiving plate, a clutch pressure plate, a plurality of clutch pressure springs, and a setting device, which is provided between the second clutch member and the third clutch member, for setting a back torque between the third clutch member and the first clutch member by an axial displacement of the third clutch member relative to the second clutch member. An engagement device is provided between the second clutch member and the third clutch member for accomplishing a releasable engagement position, between the second clutch member and the third clutch member, as a function of the rotational angular velocity of the third clutch member.