Four position fluid-actuated piston arrangement

Details Four position fluid-actuated piston arrangement Four position fluid-actuated piston arrangement

1992-10-22

1994-01-18

Wright, Dirk

Machine element or mechanism

Gearing

Interchangeably locked

F16H 5904

Patent

active

052791726

ABSTRACT:
A fluid pressure-operated shift actuator (11) is provided of the type defining a series of fluid pressure chambers (69, 71, 91, and 95). The actuator is operable to move a shift finger (19) to any one of four shift rails (1,2,3,4) by actuating various combinations of solenoids (29,31,33). One of the fluid pressure chambers (95) provides a constant bias of the shift finger (19) toward the first shift rail (1). Actuation of the second and third pressure chambers (71,91) results in selection of the third shift rail, because pressurization of the third pressure chamber (91) limits the rightward movement of the crank arrangement (37) which directly controls position of the shift finger (19).

REFERENCES:
patent: 2157592 (1939-05-01), Casler
patent: 2297026 (1942-09-01), Sanford et al.
patent: 2432712 (1947-12-01), Bachman et al.
patent: 2931237 (1960-05-01), Backus
patent: 2974766 (1961-03-01), Perkins et al.
patent: 3058364 (1962-10-01), Alfieri
patent: 4718307 (1988-01-01), Yabe et al.
patent: 4899607 (1990-02-01), Stainton
patent: 4911031 (1990-03-01), Yoshimura et al.

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