Bistable miniature valve

Valves and valve actuation – Heat or buoyancy motor actuated

Reexamination Certificate

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Details

C251S129010

Reexamination Certificate

active

07422191

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.

REFERENCES:
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patent: 6123316 (2000-09-01), Biegelsen et al.
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patent: 6340176 (2002-01-01), Webber et al.
patent: 6438810 (2002-08-01), Rogers, Jr. et al.
patent: 6513747 (2003-02-01), Lee et al.
patent: 6572147 (2003-06-01), Webber et al.
patent: 6598621 (2003-07-01), Wygnanski
patent: 6725509 (2004-04-01), Lee et al.
patent: 6828887 (2004-12-01), Kubby et al.

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