Actuator having Belleville washer configuration operating in con

Details Actuator having Belleville washer configuration operating in con Actuator having Belleville washer configuration operating in con

1981-10-02

1984-05-01

Maslousky, Paul E.

Expansible chamber devices

With inspection window in expansible chamber wall portion

With lock

92108, 92130B, 137556, 251 636, F01B 3112

Patent

active

044454244

ABSTRACT:
A pressure actuator is provided for a valve having a housing and an actuating stem, wherein an annular housing is attachable at one end of the valve housing and a cylindrical piston element is concentrically fixedly mounted to the other end of the annular housing. A cup-shaped cylinder is provided to cooperate in sliding and sealing relationship with the exterior of the piston. The cylinder defines an annular space between its exterior surface and the interior bore of the annular housing and spring elements are mounted in the annular space. If desired, an indicating stem passes through a bore in the fixed piston element and is interiorly engaged with the movable cylinder element, thus providing an indicating actuator wherein the total length of the actuator is not substantially in excess of twice the stroke of the actuator.

REFERENCES:
patent: 2179153 (1939-11-01), Jones
patent: 3029060 (1962-04-01), Anderson
patent: 3065949 (1962-11-01), DeFrees

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