Shift valve for automatic automotive transmission or the like

Details Shift valve for automatic automotive transmission or the like Shift valve for automatic automotive transmission or the like

1988-04-25

1990-01-02

Braun, Leslie A.

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

74867, B60K 4106

Patent

active

048905178

ABSTRACT:
A spring is disposed between first and second reciprocal spool valve elements and arranged to bias the same apart when the level of throttle pressure falls to a low level. The first valve is arranged to control the communication between a source of line pressure and a friction element or elements and is subject to the effects of the governor pressure. The second of the spool valve elements is subject to the effect of throttle pressure and a second spring which biases the second element toward the first one.

REFERENCES:
patent: 4334442 (1982-06-01), Iwanaga et al.
patent: 4455892 (1984-06-01), Sakakibara
patent: 4537095 (1985-08-01), Morisawa
patent: 4587887 (1986-05-01), Shibayama et al.
patent: 4609013 (1986-09-01), Takahashi

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