Patent ID: 6086041
Filing Date: 2000-07-11
Classification: B60N,F16K,Y10T

Abstract:
A pneumatic control valve assembly having a flow passage selectively opened and closed by a valve disc carried by a selectively energized piezoelectric actuator that has at least two operating positions characterized by:a pair of oppositely facing housing members; one of said oppositely facing housing members having a cavity therein surrounded by a peripheral surface;said peripheral surface connected to the other of said oppositely facing housing members for hermetically sealing said cavity;a fluid flow port in at least one of said housing members;said valve disc on each one of said plurality of circular diaphragms being positioned to close one of said plurality of fluid flow ports when each one of said circular diaphragms is in its first position and said valve disc on each one of said plurality of circular diaphragms being positioned to open said each one of said plurality of fluid flow ports when each one said circular diaphragms is in its second position.