Valve actuator having a continuously charged accumulator

Details Valve actuator having a continuously charged accumulator Valve actuator having a continuously charged accumulator

1980-12-10

1982-09-14

Chambers, A. Michael

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

60413, 91 5, 91415, F16K 3112, F15B 2100

Patent

active

043491758

ABSTRACT:
An actuator is provided which is respondable to control fluid pressure for moving an operative means of a valve between open and closed positions. Valve means are movable between open and closed positions and communicate between the accumulator means and the fluid passage means to permit fluid control pressure charging of the accumulator chamber when the valve is in the open position and for preventing discharge of fluid pressure within the accumulator chamber when the valve is in the closed position. The valve is responsive to pressure differential between the accumulator chamber and the fluid passage means. The shaft is selectively shiftable longitudinally in a first direction to move the operative means to one of open and closed positions, preferably by increase in fluid control pressure, the shaft being selectively shiftable longitudinally in a second direction to move the operative means to the other of the open and closed positions upon, preferably, subsequent decrease in fluid control pressure and release of energy stored within the accumulator.

REFERENCES:
patent: 768939 (1904-08-01), Hall
patent: 3155365 (1964-11-01), Hartung et al.
patent: 3248879 (1966-05-01), Natho
patent: 3379405 (1968-04-01), Natho
patent: 4036106 (1977-07-01), Athy, Jr.
patent: 4135547 (1979-01-01), Akkerman et al.

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