Abstract: A control device for controlling at least one adjustment member, in particular an electrical chain transfer of a bicycle, is proposed. The control device comprises a signal transmitter which is disposed at a location distant from the at least one adjustment member and which can be set by a user into a plurality of shift settings, in particular gears, for setting the at least one adjustment member into a plurality of operational positions, and at least one signal line for transmitting signals between the signal transmitter and the respective adjustment member.

Abstract: A displacement sensor for an actuating drive, particularly in a vehicle, having an actuating motor and an especially power takeoff member of the actuating drive, comprising a sensor housing having an axis, a drive member drivable by the actuating motor and rotatably supported coaxially to said sensor housing, an intermediate member, rotatably supported coaxially with respect to said drive member, which intermediate member engages the power take-off member and is connected to the drive member via at least one of an overload clutch and a return stroke clutch and a rotary displacement pick-up means, arranged in said sensor housing and adapted to detect the instantaneous rotary position of the intermediate member and to output a signal indicating this rotary position. This displacement sensor is distinguished by a compact, robust embodiment and high-precision displacement detection.

Abstract: An electrical adjustment device, in particular an electrical chain transfer device for bicycles is disclosed, comprising an adjusting element, a drive device for the adjusting element, a control unit for controlling the drive device and a presetting device connected with the control unit for presetting a plurality of set values, where each of these set values corresponds to an operational position of the adjusting element. In the adjustment device of the invention the adjusting element can be moved into respectively one set position corresponding to a desired operational position for fixing or, if required, correcting of the set values, and the resulting instantaneous value can be stored in the presetting device as the new set value.