Abstract: A plate-link chain for a motor vehicle drive system. The chain includes a number of link plates articulatingly connected to each other by rocker members that extend transversely to the longitudinal direction of the chain and are positioned in openings in the link plates. Forces are transmitted through opposed, curved contact surfaces on the rocker members and on the link plate openings. The contact surfaces are formed in a cross section extending in the longitudinal direction of the plate-link chain and define upper and lower contact surface regions, relative to the height dimension of the rocker member. The link plate opening curves in an inward direction in an intermediate region between the contact surfaces.

Abstract: A continuously variable transmission with two conical disk pairs on the input side and two conical disk pairs on the output-side that are connected with each another by two parallel endless torque-transmitting members in a drive mechanism. In one form of the transmission an asymmetrical cone angle on the conical disks enables the installation space to be reduced.

Abstract: Actuation devices are disclosed for a pressure-closed clutch where the position of an actuation member is acquired by an incremental sensor. In an embodiment of the actuation device, the signal of the incremental sensor is acquired in case of a sudden change in the power consumption of an actuator and is used as a new reference signal. In another embodiment, the actuation member, while the spindle is rotating, is moved by a recovery spring during the closing of the clutch against a stop and the signal of the incremental sensor upon the attainment of said stop is used as a reference signal.