Multi-speed power transmission

Details Multi-speed power transmission Multi-speed power transmission

1979-05-11

1980-12-09

Husar, C. J.

Machine element or mechanism

Gearing

Plural power paths to and/or from gearing

192 488, 192 8711, 192 7011, F16H 5710, F16D 2102, F16D 2510, F16D 25061

Patent

active

042377498

ABSTRACT:
A four-speed planetary transmission has three friction clutches which are selectively engageable in pairs or simultaneously to provide a drive connection between the transmission input and the planetary gearing during the four forward speeds. One apply piston selectively engages two of the friction clutches and a second apply piston selectively engages the other friction clutch and one of the two friction clutches. Simultaneous actuation of both apply pistons causes engagement of all three clutches. A one-way clutch is disposed in series drive relation with the friction clutch that is selectively engageable by both apply pistons.

REFERENCES:
patent: 2010288 (1935-08-01), Bartelme
patent: 2043784 (1936-06-01), Tyler
patent: 2775330 (1956-12-01), Schjolin
patent: 3138964 (1964-06-01), Stockton
patent: 3160030 (1964-12-01), Wickman
patent: 3164232 (1965-01-01), General
patent: 3602055 (1971-08-01), Hause et al.
patent: 3886816 (1975-06-01), De Feo et al.
patent: 4086827 (1978-05-01), Chana
patent: 4186827 (1980-02-01), Spanke

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