Transmission shifting apparatus having manually operable selecto

Details Transmission shifting apparatus having manually operable selecto Transmission shifting apparatus having manually operable selecto

1993-10-06

1995-12-12

Marmor, Charles A.

Machine element or mechanism

Gearing

Interchangeably locked

477906, F16H 5904, F16H 6308

Patent

active

054739594

ABSTRACT:
A vehicle transmission unit is housed in a casing and includes a plurality of drive ratio paths selectively engageable by a ratio selection system. The ratio selection system includes fluid-pressure-operated actuators under the control of solenoid-operated valves to select the operative drive ratio of the transmission. The transmission also includes one or more mechanical actuator members accessible from outside the casing which can be manipulated to select one or more drive ratios of the unit in the event of the failure of the fluid-pressure-operated actuators or valves.

REFERENCES:
patent: 1413058 (1922-04-01), Richardson
patent: 4580457 (1986-04-01), Ishida et al.
patent: 4841816 (1989-06-01), Bullock
patent: 4986142 (1991-01-01), Borodin et al.
patent: 5134903 (1992-08-01), Itoh

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