Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1988-06-06
1989-08-15
Wright, Dirk
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
74866, B60K 4118, B60K 4116
Patent
active
048563838
ABSTRACT:
A manual valve alternately connects a source of regulated line pressure to a forward drive passage and to a reverse drive passage. A shift valve alternately connects these passages to an input port of a coast clutch valve in accordance with the state of a solenoid-operated valve. A control port of the coast clutch shift valve is pressurized either from a manual valve, when the gear is selected manually by the vehicle operator, or from the source of variable pressure control by operation of a variable force solenoid. In accordance with the control pressure, the coast clutch shift valve either connects its input to a line connected to the coast clutch or vents the input to a drain passage in the shift valve.
REFERENCES:
patent: 3393585 (1968-07-01), Pierce
patent: 3613484 (1971-10-01), Pierce et al.
patent: 3706240 (1972-12-01), Borneman et al.
patent: 3714836 (1973-02-01), Pierce et al.
patent: 4346627 (1982-08-01), Kawamoto et al.
patent: 4367528 (1983-01-01), Kawamoto et al.
patent: 4485695 (1984-12-01), Kawamoto
patent: 4776240 (1988-10-01), Mike
Ford Motor Company
Harrington Donald J.
McKenzie Frank G.
Wright Dirk
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