Fast-acting valve actuator

Details Fast-acting valve actuator Fast-acting valve actuator

1972-07-12

1980-02-12

Behrend, Harvey E.

Motors: expansible chamber type

With motive fluid valve

Self-opening exhaust valve held closed by inlet pressure

91443, 91459, 13759616, F01B 300

Patent

active

041877640

ABSTRACT:
A fast-acting valve actuator utilizes a spring driven pneumatically loaded piston to drive a valve gate. Rapid exhaust of pressurized gas from the pneumatically loaded side of the piston facilitates an extremely rapid piston stroke. A flexible selector diaphragm opens and closes an exhaust port in response to pressure differentials created by energizing and de-energizing a solenoid which controls the pneumatic input to the actuator as well as selectively providing a venting action to one side of the selector diaphragm.

REFERENCES:
patent: 3390943 (1968-07-01), Myers
patent: 3460798 (1969-08-01), Carsten

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