Transmission throttle valve of automatic power transmission

Details Transmission throttle valve of automatic power transmission Transmission throttle valve of automatic power transmission

1979-01-18

1981-08-11

Braun, Leslie

Machine element or mechanism

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

Preselected indexed position

74857, 74860, 74868, 74877, 137 86, B60K 4106, B60K 4100, G05D 1600

Patent

active

042827817

ABSTRACT:
A transmission throttle valve for use in a hydraulic control system of an automotive automatic power transmission, comprising a valve plunger movable with the accelerator pedal of an automotive vehicle, a valve spool arranged and movable in line with the valve plunger, a spring urging the valve spool and the valve plunger in opposite directions to each other for enabling the valve spool to produce a throttle pressure variable with the distance of movement of the valve plunger in the presence of a line pressure directed into the transmission throttle valve, and a plunger guide member arranged so that the throttle pressure developed in the valve is augmented to the level of the line pressure in the event a failure takes place in a mechanical linkage providing engagement between the valve plunger and the accelerator pedal of the vehicle.

REFERENCES:
patent: 2733732 (1956-02-01), Baker, Jr.
patent: 2832231 (1958-04-01), Edsall
patent: 3101011 (1963-08-01), Tuck et al.
patent: 3283606 (1966-11-01), Brueder
patent: 3546973 (1970-12-01), Ohie et al.
patent: 3651714 (1972-03-01), Ohya et al.
patent: 3703110 (1972-11-01), Uozumi et al.
patent: 3738198 (1973-06-01), Kell
patent: 3831465 (1974-08-01), Murakami
patent: 3840039 (1974-10-01), Shellman
patent: 4023447 (1977-05-01), Sakai et al.
patent: 4125038 (1978-11-01), Hiramatsu
General Motors, 200--THM Transmission, Oct. 18, 1976, R. E. Annis.

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