Automatic transmission

Details Automatic transmission Automatic transmission

1985-03-21

1986-08-26

Staab, Lawrence

Machine element or mechanism

Gearing

Plural power paths to and/or from gearing

74740, 74750R, 74753, F16H 5710

Patent

active

046075410

ABSTRACT:
An automatic transmission having: a torque converter; a first planetary gear set; a second planetary gear set, and friction elements operated by hydraulic servos.
The first planetary gear set has a hydraulic servo drum D.sub.1 for a clutch C.sub.1 connected to an input shaft, a sun gear provided within drum D.sub.1 and connected to the input shaft by clutch C.sub.1, a carrier connected to an output shaft, a ring gear connected to the input shaft and an intermediate shaft, a clutch C.sub.2, provided in a hydraulic servo drum D.sub.2, pinions rotatably supported by the carrier, and the gear set is provided on the inner side of clutch C.sub.2.
The second planetary gear set has a sun gear mounted on the intermediate shaft and connected to a common inner race of a one-way clutch F.sub.0, a one-way brake F.sub.1, a carrier connected to a ring gear, the ring gear is connected to the output shaft, the intermediate shaft and a brake B.sub.2, a one-way brake F.sub.2 in series with brake B.sub.2 and pinions rotatably supported by the carrier.
The common inner race is connected to a rotary drum engageable with the transmission case through brake B.sub.1, the outer race of the one-way clutch F.sub.0 is connected to the output shaft and a hydraulic servo drum D.sub.3 of a clutch C.sub.3, and the outer race of one-way brake F.sub.2 is engageable with the transmission case through brake B.sub.2.

REFERENCES:
patent: 3602055 (1971-08-01), Hause
patent: 3688601 (1972-09-01), Dach
patent: 3799004 (1974-03-01), Hause
patent: 3830117 (1974-08-01), Kodama et al.
patent: 3946624 (1976-03-01), Murakami et al.
patent: 4114478 (1978-09-01), Clauss
patent: 4142425 (1979-03-01), Ahlen et al.
patent: 4178813 (1979-12-01), Smemo
patent: 4224838 (1980-09-01), Roushdy et al.
patent: 4238967 (1980-12-01), Volkov et al.
patent: 4346622 (1982-08-01), Pierce
patent: 4400998 (1983-08-01), Bookout et al.

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