Pneumatic pressure regulator assembly
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United States of America Patent
Stats
-
Oct 28, 2003
Grant Date -
Jun 12, 2003
app pub date -
Dec 6, 2001
filing date -
Dec 6, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pneumatic pressure regulator assembly including a regulator housing having an inlet adapted for fluid communication with a supply of pneumatic pressure, an outlet adapted to provide pneumatic pressure to a downstream pneumatically actuated device at a regulated pressure, and a regulator valve assembly. The regulator valve assembly has a valve member movably supported within the regulator housing between an open and a closed position. A piston assembly acts to bias the valve member to its open position when the outlet pressure is below a predetermined value. The piston assembly includes a pressure responsive surface defining a geometric shape with a major and a minor axis wherein the major axis is greater than the minor axis. The piston assembly is responsive to pneumatic pressure flowing between the inlet and the outlet to reduce the biasing force acting on the valve member such that the valve member moves to its closed position when the outlet pressure exceeds a predetermined value.
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