192 clutches and power-stop control – Clutches – Operators
Patent
1985-06-07
1986-08-19
Dorner, Kenneth J.
192 clutches and power-stop control
Clutches
Operators
192 98, 192 85CA, 192 88A, F16D 2504, F16D 2508, F16D 1375
Patent
active
046064494
ABSTRACT:
A hydraulic release mechanism of the bellows type provides for a constant volume of hydraulic fluid, thereby allowing a bellows of minimum size to be used. A housing is slidably supported on a transmission mounted guiding member for movement between the transmission and the fingers of diaphragm spring. A piston also slidably supported on the guiding member is receivable within the housing, with a housing attached flexible bellows engaged therebetween. A coil spring continually biases the housing and piston together and toward the spring fingers. The continual bias keeps the piston lightly engaged with the spring fingers, and keeps the housing at an operative position on the guiding member where the bellows is maintained in a constant volume unexpanded state. A flexible collet is flexed into the guiding member when the bellows begins to expand, anchoring the housing at its operative position. The anchoring allows the same volume of additional hydraulic fluid to expand the bellows sufficiently to move the piston, compress the spring fingers, and release the clutch.
REFERENCES:
patent: 2668610 (1954-02-01), Backus
patent: 2717680 (1955-09-01), Smith
patent: 2757769 (1956-08-01), Roise
patent: 3955660 (1976-05-01), Poon et al.
patent: 4051937 (1977-10-01), Garrett et al.
patent: 4482040 (1984-11-01), Brandenstein et al.
patent: 4561531 (1985-12-01), Young et al.
patent: 4567812 (1986-02-01), Weiler et al.
Dorner Kenneth J.
General Motors Corporation
Griffin Patrick M.
Testardi David A.
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