Patent ID: 6085884
Filing Date: 2000-07-11
Classification: F16D

Abstract:
An actuating element for a clutch, comprising:a cylinder having a longitudinal axis, a closed end, and an open end;a piston axially displaceable within said cylinder and defining a working chamber in said cylinder between said piston and said closed end of said cylinders said working chamber hydraulically connectable to a pressure medium supply;a tappet arranged adjacent said piston such that said piston is supported against said tappet for actuating a clutch release lever in response to the pressure medium supply, said tappet being axially movable within a range of movement by said piston;a stop mounted in said cylinder for limiting a displacement of said piston toward said open end of said cylinder, wherein said piston occupies an intermediate position between said stop and said closed end of said cylinder;an automatic adjusting device operatively arranged in said cylinder for axially adjusting a position of said range of movement of said tappet;wherein said cylinder comprises an inner surface having a plurality of axially adjacent circumferential grooves, each said grooves having a first flank facing said closed end of said cylinder and a second flank facing said open end of said cylinder, said first flank being arranged substantially perpendicular to said longitudinal axis of said cylinder and said second flank gradually ascending from a bottom of said each said grooves toward a top of an adjacent one of said each of said grooves, said stop being inserted in one of said plural grooves; andsaid adjusting device being arranged on a side of said step facing said open end of said cylinder for adjusting a position of said stop and comprising a readjusting disk axially fixedly mounted on said tappet and movable with said tappet against said stop as said tappet moves toward said closed end of said cylinder.