Patent ID: 6422130
Filing Date: 2002-07-23
Classification: F16D

Abstract:
A piston (21) for a hydraulic control apparatus for a clutch for a motor vehicle, comprising a piston body (70) attached in a metallic tubular jacket (42) of aluminum, wherein the jacket (42) includes an internal cross wall (60) which lies in a radial plane and which is formed integrally in one piece with the tubular body of the jacket (42) so as to delimit axially at the front a hydraulic chamber (20) in a cylinder body (17), in which the piston is mounted for axial sliding movement, and in that the cross wall (60) delimits, axially, one of a front cavity (64, 68) and a rear cavity (66) of the jacket which is open axially and which receives the attached piston body (70).