Pressure controller
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United States of America Patent
Stats
-
Jun 18, 1985
Grant Date -
N/A
app pub date -
Jul 22, 1983
filing date -
Jul 22, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Disclosed is a pressure controller for sensing changes in a service pressure and controlling a control pressure in response to such changes. The pressure controller includes a valve body having a control inlet and a bleed outlet with a passage therebetween. A valve seat is positioned in the passage and a valve member is reciprocatingly mounted in the valve body for movement between a closed position in engagement with the valve seat and an open position out of engagement with the valve seat. The controller includes a releasable latch for latching the valve member in the closed position. The controller includes a release mechanism for releasing the latch in response to changes in service pressure to allow the valve member to move to the open position.
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