Title:
PIEZOELECTRIC ACTUATOR AND PUMP USING SAME
Document Type and Number:
WIPO Patent Application WO2004084274
Kind Code:
A3
Abstract:
Thin chamber diaphragm-operated fluid handling devices, including thin chamber pumps and thin chamber valves, facilitate device compactness and, in some configurations, self-priming. Diaphragm actuators of the thin chamber devices either comprise or are driven by piezoelectric materials. The thinness of the chamber, in a direction parallel to diaphragm movement, is in some embodiments determined by the size of a perimeter seal member which sits on a floor of a device cavity, and upon which a perimeter (e.g. circumferential or peripheral portion) of the diaphragm actuator sits. The diaphragm actuator is typically retained in a device body between the floor seal member and another seal member between which the perimeter of the actuator is sandwiched. The devices have an input port and an output port.
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Inventors:
EAST JOE W (US)
Application Number:
PCT/US2004/007979
Publication Date:
December 07, 2006
Filing Date:
March 16, 2004
Export Citation:
Assignee:
PAR TECHNOLOGIES LLC (US)
EAST JOE W (US)
EAST JOE W (US)
International Classes:
F16K31/02; F04B43/04; F16K31/00
Domestic Patent References:
| WO1999031420A1 | 1999-06-24 | |||
| WO2001004526A1 | 2001-01-18 |
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