Control valve for fluid actuator

Details Control valve for fluid actuator Control valve for fluid actuator

1978-11-13

1980-06-17

Michalsky, Gerald A.

Fluid handling

Systems

Multi-way valve unit

137458, F15B 13042, F16K 31122

Patent

active

042079241

ABSTRACT:
A control valve for a fluid actuator has a slide valve member mounted within a housing or body with an external knob on one end and a piston on the other end. The body has a central bore with an enlarged bore portion forming a valve chamber in which the piston is mounted for reciprocation. The chamber adjacent one piston face forms a fluid storage chamber and the chamber adjacent the other piston face forms a fluid pressure chamber to receive pressurized fluid. A one-way check valve is positioned between the two chambers and permits fluid pressure in the fluid storage chamber to be equalized with the fluid pressure in the pressure chamber. Upon a subsequent exhaust of fluid from the fluid pressure chamber, the piston will move quickly to a seated position under the fluid pressure in the storage chamber without any separate urging means, such as a spring, being necessary.

REFERENCES:
patent: 3875965 (1975-04-01), Peters
patent: 3877484 (1975-04-01), Theriot et al.
patent: 3921660 (1975-11-01), Kowalski
patent: 3943974 (1976-03-01), Connelly et al.

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