Planetary gear transmission systems or components – Fluid drive or control of planetary gearing – Fluid controlled mechanical clutch or brake
Patent
1996-11-08
1998-08-04
Marmor, Charles A.
Planetary gear transmission systems or components
Fluid drive or control of planetary gearing
Fluid controlled mechanical clutch or brake
475271, 475900, 477114, F16H 5710, F16H 6120
Patent
active
057885966
ABSTRACT:
A power transmission has an electro-hydraulic control for selectively establishing a plurality of clutches and brakes for controlling a plurality of planetary gearsets to establish the transmission drive ratios. During a vehicle stopped condition, two brakes are engaged to restrain rotation of two members of one of the planetary gear sets. This results in braking of the transmission output shaft.
REFERENCES:
patent: 2682787 (1954-07-01), Holdeman
patent: 3017788 (1962-01-01), Polomski
patent: 3300001 (1967-01-01), Stockton
patent: 4784020 (1988-11-01), Hamano et al.
patent: 4840092 (1989-06-01), Sakaguchi et al.
patent: 4883151 (1989-11-01), Tobler
patent: 5620386 (1997-04-01), Jamzadeh
Hampton Jill Ann
Robinson Timothy Alan
Estremsky Sherry Lynn
General Motors Corporation
Marmor Charles A.
Scherer Donald F.
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