Multiple state valve
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United States of America Patent
Stats
-
Jul 27, 1993
Grant Date -
N/A
app pub date -
May 10, 1991
filing date -
May 10, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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