Patent ID: 7458453

Claim:
A disk clutch, with which a first body ( 1 ) and a second body ( 2 ) in which a piston ( 5 ) to which a hydraulic pressure is applied is mounted in a rotationally fixed but axially displaceable manner, are connected to one another in a non-positive manner via intermeshing disks that can be acted upon by the force of the piston ( 5 ), of a manual transmission for motor vehicles, with a spring force of a spring mechanism which influences an adjusting force produced by a power source for operation of the clutch, wherein the spring mechanism ( 3 ) and/or at least one of a plurality of thrust bearings ( 6 ) associated with the spring mechanism is provided with a sensor ( 4 ) which detects solid-state changes for determining the spring force emanating from the spring mechanism ( 3 ) and a device for transmitting the measured values thus determined for regulating the adjusting power source, whereby a deceleration force of the hydraulic pressure applied to the piston ( 5 ) counteracting the spring mechanism in the opening of the clutch is part of the adjusting force or thrust force acting on the clutch; and wherein the sensor ( 4 ) is designed as a piezoresistive, amorphous carbon layer applied permanently to a surface area of the spring mechanism ( 3 ) or the thrust bearing ( 6 ).