Valve actuator

Details Valve actuator Valve actuator

1983-04-25

1985-03-12

Walton, George L.

Valves and valve actuation

Fluid actuated or retarded

With mechanical movement between actuator and valve

74 57, 74 89, 92 31, 137 75, 251 614, 251 635, 251229, 251253, F16K 31122, F16K 31126, F16K 31528

Patent

active

045040389

ABSTRACT:
A valve operator having a piston or diaphragm and connected polygonal piston rod which supplies reciprocable motion to a key or follower which acts within a spiraled slot formed in a coupling member attached to a valve gate to rotate the valve gate to a desired angular position. One embodiment includes means to bias the piston and the valve gate in a desired angular position from closed to open or therebetween.

REFERENCES:
patent: 2315775 (1943-04-01), D'Arcey
patent: 2883144 (1959-04-01), Kendig
patent: 2908478 (1959-10-01), Starrett
patent: 2998805 (1961-09-01), Usab
patent: 3035609 (1962-05-01), Dyer
patent: 3046802 (1962-07-01), Cupedo
patent: 3078065 (1963-02-01), Vickery
patent: 3184214 (1965-05-01), King
patent: 3198539 (1965-08-01), McMullen et al.
patent: 3391722 (1968-07-01), Ligh
patent: 3417960 (1968-12-01), Stehlin
patent: 3450382 (1969-06-01), Calim
patent: 3542332 (1970-11-01), Chevalier et al.
patent: 3744506 (1973-07-01), Milsted, Sr.
patent: 3982725 (1976-09-01), Clark
patent: 4285495 (1981-08-01), King
patent: 4316597 (1982-02-01), Goodman et al.

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