Slow-opening valve operated by a solenoid pump

Details Slow-opening valve operated by a solenoid pump Slow-opening valve operated by a solenoid pump

1979-06-20

1981-01-27

Rosenthal, Arnold

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

251 57, 60432, 60477, F16K 3104, F16K 31122

Patent

active

042470773

ABSTRACT:
A slow-opening valve including a main valve, a chamber for receiving a control fluid other than that controlled by the main valve, and a member within the chamber responsive to the volume of control fluid in the chamber for opening and closing the main valve. A solenoid pump, including an armature and an electrical solenoid for vibrating the armature, produces fluid flow in small increments with respect to the chamber to effect opening of the valve. An auxiliary valve, which opens and closes in response to the position of the solenoid pump armature, controls flow of fluid with respect to the chamber for closing the main valve.

REFERENCES:
patent: 2948118 (1960-08-01), Carlson, Jr. et al.
patent: 3051432 (1962-08-01), Sullivan
patent: 3120103 (1964-02-01), Beard et al.
patent: 3175500 (1965-03-01), Zeigler
patent: 3200591 (1965-08-01), Ray
patent: 4054155 (1977-10-01), Hill

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