Third accumulator check valve

Details Third accumulator check valve Third accumulator check valve

1983-08-08

1985-03-05

Nilson, Robert G.

Machine element or mechanism

Gearing

Plural power paths to and/or from gearing

137102, F16K 1110

Patent

active

045023514

ABSTRACT:
An improved third accumulator check valve is provided for the valve chamber which services feed oil to the release side of the intermediate servo cylinder of a turbohydramatic transmission system for motor vehicles wherein the intermediate band is released as direct clutches are applied. It comprises a positive seating valve in the chamber exhaust port, preventing exhaust port leakage which results in premature band application and clutch drag, and is characterized by a valve body which has more favorably disposed outer lift surfaces and an internal bore flow chamber with additional lift surfaces, said bore being provided further with a flow-released bore closure biasing the valve responsive to active flow pressure with assisted force into a continuously seated position.

REFERENCES:
patent: 2928417 (1960-03-01), Buchner et al.
patent: 3027913 (1962-04-01), Chatham et al.
patent: 3344681 (1967-10-01), Searles
patent: 3464321 (1969-09-01), Piotrowski
patent: 3682043 (1972-08-01), Bailey et al.
patent: 3757644 (1973-09-01), Bailey et al.
patent: 3789963 (1974-02-01), Bailey et al.
patent: 4031915 (1977-06-01), McElhoe et al.
patent: 4041970 (1977-08-01), Peters

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