Patent ID: 8157073

Claim:
A separable clutch for a motor vehicle, comprising: a clutch adjuster including a movably mounted clutch operator for engaging and disengaging the clutch, the clutch adjuster being pressure-medium-actuated, and comprising: a) an actuating piston, which acts on the clutch operator for engaging and disengaging the clutch; b) a pressure chamber, which is pressurizable and relievable of pressure, the pressure chamber being delimited at one side by at least a part of the actuating piston, and at the other side by at least a part of a clamping piston, c) wherein at least the actuating piston, the pressure chamber and the clamping piston are resiliently supported against the clutch operator in a defined position by spring force, which spring force is lower than a limit force required for actuating the clutch operator; d) wherein, on account of a pressure change in the pressure chamber caused by a clutch actuation, the clamping piston actuates a clamping device such that the clamping piston is fixed before the actuating piston actuates the clutch operator, and e) wherein a clamping action, which is based on interaction of a wedge-shaped portion of the clamping piston with an opposing wedge-shaped surface to generate a clamping force, is producible between the clamping piston and the tube piece by the clamping device.