Electrohydraulic pilot valve

Details Electrohydraulic pilot valve Electrohydraulic pilot valve

1992-08-21

1993-09-07

Chambers, A. Michael

Valves and valve actuation

Electrically actuated valve

Balanced valve

25112915, 251282, F16K 3102, F16K 3900

Patent

active

052421490

ABSTRACT:
An electrohydraulic pilot valve that includes a valve spool movably mounted within a valve body for selectively coupling a valve inlet to a valve outlet. A solenoid is mounted on the valve body for applying a force to one end of the spool as a function of an electronic control signal. A pair of fluid restrictions are connected between the valve outlet and a fluid pressure sump effectively to form a pressure divider, from which fluid is fed back to the opposing end of the valve spool.

REFERENCES:
patent: 2648968 (1972-03-01), Reid et al.
patent: 2831650 (1958-04-01), Richardson
patent: 3442485 (1969-05-01), Reynolds
patent: 4029293 (1977-06-01), Meysenburg
patent: 4252296 (1981-02-01), Berg

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