Hydraulic operating unit of friction engaging apparatus for tran

Details Hydraulic operating unit of friction engaging apparatus for tran Hydraulic operating unit of friction engaging apparatus for tran

1987-05-04

1988-11-29

Bonck, Rodney H.

192 clutches and power-stop control

Clutches

Operators

188151R, 92 65, F16D 6532, F16D 2506

Patent

active

047874945

ABSTRACT:
A hydraulic operating unit for the friction engaging apparatus of a transmission provides a hydraulic operating unit which permits the introduction of a low-pressure working fluid to permit the forceable disengagement of the hydraulic operation unit to work against the fluid which would normally urge the unit into engagement. The effective pressure-receiving area on the releasing side of a hydraulic power servo mechanism is made sufficiently large with respect to the effective pressure-receiving area on the engaging side of the servo mechanism while the piston diameter is kept small in order to save space in the construction of the servo mechanism while at the same time permitting the device to effectively disengage the friction mechanism.

REFERENCES:
patent: 3007562 (1961-11-01), Aschauer
patent: 3171526 (1965-03-01), Waclawek
patent: 3324771 (1967-06-01), Cruse
patent: 3974896 (1976-08-01), Rach
patent: 4388986 (1983-06-01), Umezawa

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