Bistable miniature valve
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United States of America Patent
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-
Sep 9, 2008
Grant Date -
Jan 26, 2006
app pub date -
Jun 10, 2005
filing date -
Jun 14, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A bistable minivalve includes a movable component, an actuator that is electrostatically, magnetically, or mechanically coupled to the movable component for controllably switching the movable component between open and closed states, and a casing providing structural support. The movable component has an actuation surface [300] movably positioned in the valve conduit and a bistable element attached to the actuation surface providing mechanical stability to the open and closed states of the movable component. The bistable element may be realized as a pair of elastic buckling beams [302, 304] attached at their midpoints to opposite sides of the actuation surface. Optionally, there may also be elastic support beams [306, 308] attached at their endpoints to the actuation surface and attached at their midpoints to the elastic buckling beams.
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