Modulating relief valve with hydraulic safety

Details Modulating relief valve with hydraulic safety Modulating relief valve with hydraulic safety

1974-09-06

1978-09-05

Gerin, Leonard H.

Machine element or mechanism

Gearing

Plural power paths to and/or from gearing

192 8713, F16H 344, F16D 1900

Patent

active

041110714

ABSTRACT:
A safety valve includes a movable piston which functions to prevent actuation of fluid operated drive conditioning clutches of a vehicle transmission unless the selector valve means are passed through a neutral position. Such safety valve spool also acts as a load piston for a pressure modulating relief valve of the system.

REFERENCES:
patent: 3468194 (1969-09-01), Horsch et al.
patent: 3596536 (1971-08-01), Starling
patent: 3640146 (1972-02-01), Barnes
patent: 3709065 (1973-01-01), Starling
patent: 3863523 (1975-02-01), Starling et al.

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