Electrohydraulic valve

Details Electrohydraulic valve Electrohydraulic valve

1982-09-13

1984-07-24

Garrett, Robert E.

Fluid handling

Self-proportioning or correlating systems

Supply and exhaust type

91420, 91446, 91448, G05D 706, F15B 13044

Patent

active

044613148

ABSTRACT:
A 4-way, 3-position, on-off type electrohydraulic valve includes a pair of solenoid-operated inlet valves for controlling communication between a pump and a valve bore. A pair of adjustable check valves are positioned in opposite ends of the valve bore. A double-acting pilot return valve assembly is operably mounted in a central portion of the valve bore and is movable to engage and open one of the check valves to return fluid flow when pump pressure flows through the other check valve to a fluid motor.

REFERENCES:
patent: 3274902 (1966-09-01), Kleckner
patent: 3543647 (1970-12-01), Hall et al.
patent: 3587399 (1971-06-01), Dike et al.
patent: 3587630 (1971-06-01), Dike et al.
patent: 3792710 (1974-02-01), McDermott
patent: 4343153 (1982-08-01), Kern et al.

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