Hydraulic servo-mechanism for an automatic transmission

Details Hydraulic servo-mechanism for an automatic transmission Hydraulic servo-mechanism for an automatic transmission

1996-12-27

1999-03-16

Bonck, Rodney H.

192 clutches and power-stop control

Clutches

Operators

92 63, 188 77W, 188347, F16D 4912

Patent

active

058818588

ABSTRACT:
A hydraulic servo-mechanism for an automatic transmission, including a hydraulic servo for applying a band brake to engage a band to a drum. The hydraulic servo includes a rod which is selectively positionable to an apply position for applying the band brake, a standby position in which the rod is retracted by a predetermined extent in a release direction from the apply position, and a retracted position in which the rod is further retracted in the release direction from the standby position to release the band brake.

REFERENCES:
patent: 2227245 (1940-12-01), Carroll
patent: 2513192 (1950-06-01), McFarland
patent: 2633712 (1953-04-01), Sheppard
patent: 2769307 (1956-11-01), McFarland
patent: 4388986 (1983-06-01), Umezawa
patent: 4601233 (1986-07-01), Sugano
patent: 4787494 (1988-11-01), Ogasawara et al.
patent: 4790211 (1988-12-01), Iwatsuki et al.
patent: 4930373 (1990-06-01), Nakawaki et al.
patent: 5020393 (1991-06-01), Kuwayama et al.
patent: 5588928 (1996-12-01), Koivunen
patent: 5711403 (1998-01-01), Sparks et al.

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