Pinch valve

Details Pinch valve Pinch valve

1986-10-10

1987-08-04

Schwadron, Martin P.

Valves and valve actuation

Tube compressors

Perpendicularly reciprocating tube contacting element

251 4, 25112916, 251 69, F16L 5514

Patent

active

046841024

ABSTRACT:
A pinch valve employing first and second linear solenoids in series so that the first solenoid closes a flexible tube when powered, and the second solenoid is positioned to be pushed by a spring, to in-turn push the driving member of the first solenoid in a loss-of-power condition, and is positioned to be moved away from the first solenoid when powered so that the first solenoid is free to selectively close or open the tube.

REFERENCES:
patent: 3275964 (1966-09-01), Kumm
patent: 3373769 (1968-03-01), Chaves, Jr. et al.
patent: 4063554 (1977-12-01), Willock et al.
patent: 4259985 (1981-04-01), Bergmann
patent: 4273307 (1981-06-01), Maliski et al.
patent: 4496133 (1985-01-01), Sule
patent: 4512627 (1985-04-01), Archer et al.

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