Patent ID: 7219496
Filing Date: 2007-05-22
Classification: F16D

Abstract:
1. A pressure-limiting device in a hydraulic path for actuating a clutch, the hydraulic path including a slave cylinder and a master cylinder hydraulically interconnected by at least one conduit through which a fluid flows, the pressure-limiting device comprising: a restrictor member having a central restrictor bore for pressure reduction; a cup-shaped retaining ring having a bottom that includes a central retaining ring bore and at least one radially spaced opening spaced radially from the central retaining ring bore disposed on a reference circle in the bottom, wherein each of the restrictor bore and the at least one radially spaced opening having a short length; a spring applying pressure to the retaining ring; wherein at least one of the restrictor member and the central restrictor bore is activatable when a predetermined volumetric flow rate of the fluid is exceeded during an engagement of the clutch and the at least one radially spaced opening is closable when a predetermined pressure drop is exceeded.