Hydraulic clutch release bearing for a motor vehicle diaphragm c

Details Hydraulic clutch release bearing for a motor vehicle diaphragm c Hydraulic clutch release bearing for a motor vehicle diaphragm c

1996-09-11

1998-04-28

Lorence, Richard M.

192 clutches and power-stop control

Clutches

Operators

192 91A, 192 98, 92 86, F16D 2508

Patent

active

057433704

ABSTRACT:
A fluid pressure operated clutch release bearing for a diaphragm clutch of a motor vehicle includes a fixed part which comprises a cylindrical annular external body and an internal tube. The body and tube together define an annular cavity, into which pressurised fluid is fed for controlling the release bearing by actuation of a tubular piston, which slides axially in the cavity and which has a front end portion that carries an actuating element which acts on the clutch diaphragm. This front end portion also carries a finned sealing ring which cooperates with the outer peripheral surface of the tube, so as to restrict leakage of fluid through the annular space which is defined between the outer surface of the tube and the internal bore of the piston; and the piston has at least one evacuation orifice which connects the annular space to a zone in which leaked fluid can be recovered.

REFERENCES:
patent: 3474888 (1969-10-01), Carlson
patent: 4979602 (1990-12-01), Fukushima

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