Fluid handling – Systems – Supply and exhaust
Patent
1977-02-25
1978-08-29
Michalsky, Gerald A.
Fluid handling
Systems
Supply and exhaust
91457, 137636, 251118, 251240, F15B 1304
Patent
active
041096789
ABSTRACT:
A fluid control valve assembly comprises a pair of identical valves mounted on a manifold with connections to the controlled actuator and to the high and low pressure sides of a fluid circuit incorporating a pump or other source of high-pressure fluid. Each valve includes a reciprocating tappet directly connected to a conical valve head and spring biased into a closed position of the valve, with a portion of the tappet protruding from the valve body. Superimposed on the two protruding tappets is a rocking beam which may be pivoted into contact with either tappet by means of a handwheel engaged in a bracket. A threaded shaft affixed to the handwheel passes through a nut pivotally secured to the rocking beam, so that rotation of the handwheel in either sense will result in the depression of one of the two valve tappets and the opening of the valve associated therewith. One valve is connected to the manifold to supply pressurized fluid to the actuator; the other valve is connected to a fluid sump to permit the discharge of fluid from the actuator.
REFERENCES:
patent: 1956775 (1934-05-01), Ross
patent: 3838710 (1974-10-01), Reip
Michalsky Gerald A.
Schamus Julian J.
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