Patent ID: 6837356

Claim:
A release apparatus for a clutch in a motor vehicle having a chassis, the apparatus comprising: a master cylinder of a hydraulic system, a pedal for actuating said master cylinder to disengage said clutch, said pedal requiring an actuating force which is plotted against pedal travel during actuation of said master cylinder to produce a characteristic curve of said actuating force, an energy accumulator which is pivotable with respect to said chassis, said accumulator storing energy when the clutch is engaged and providing a boosting force which reduces the actuating force as the clutch is being disengaged, said boosting force being plotted against pedal travel to produce a characteristic curve of said boosting force, and a kinematic arrangement arranged between said energy accumulator and said pedal for influencing the characteristic curve of the boosting force, the kinematic arrangement comprising a rolling cam and a roller which are pressed against each other by the energy accumulator, the roller moving across the rolling cam as the pedal travels during actuation of the master cylinder.