Multiple state valve

Details Multiple state valve Multiple state valve

1991-05-10

1993-07-27

Schwadron, Martin P.

Valves and valve actuation

Tube compressors

Pivoting tube contacting element

251 7, F16K 706

Patent

active

052304973

ABSTRACT:
A multiple state pinch valve selectively controls the flow rate of fluid flowing within a flexible, resilient pinch tube. The valve includes a housing, and two biased pivot arm pinchers pivotally mounted in the housing on opposite sides of the pinch tube. Two springs bias respective ones of the pivot arm pinchers toward one another to pinch the tube, and two electromagnetic force field generators are mounted in the housing to selectively attract respective pivot arms away from one another to thereby selectively release some of the pinching of the tube.

REFERENCES:
patent: 2791239 (1957-05-01), Mason
patent: 3511469 (1970-05-01), Bell
patent: 4061142 (1977-12-01), Tuttle
patent: 4176671 (1979-12-01), Citrin
patent: 4518145 (1985-05-01), Keltz et al.

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