Patent ID: 9677625
Date: 2017-06-13
CPC Classifications: F16D,F16J,Y10T

Claim:
1. A concentric slave cylinder for a motor vehicle clutch comprising: a housing including a wall; a piston slidable along the wall in a forward direction and a return direction, the piston including a first angled surface, the piston and the housing forming a hydraulic chamber therebetween; and a ring slidable along the wall in the hydraulic chamber in the forward direction and limiting sliding of the piston in the return direction, the ring including a frustoconical portion having a second angled surface for engaging the first angled surface to limit the sliding of the piston in the return direction, the ring including an engagement surface slidably engaging the wall, the second angled surface and the engagement surface together forming an acute angle such that the frustoconical portion gets radially thicker as the frustoconical portion extends in the return direction.