Automatic vent valve
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United States of America Patent
Stats
-
Sep 17, 1985
Grant Date -
N/A
app pub date -
Dec 12, 1983
filing date -
Dec 12, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An automatic vent valve having a stoppage member within a flow chamber located between an inlet chamber and vent chamber with said stoppage member being biased against a lower seat. The stoppage member moves between said lower seat and an upper seat in response to pressure changes associated with the operation of a positive displacement pump which either overcomes said biasing means or allows said biasing means to function. During the movement of the stoppage member between the upper and lower seats a flow path exists between the inlet chamber and vent chamber such that gases and/or fluid are vented on each stroke of the pump.
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Family
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Cited Art Landscape
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