Piezoelectric valve
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United States of America Patent
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-
Feb 27, 1990
Grant Date -
N/A
app pub date -
Jan 19, 1989
filing date -
Jan 19, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A piezoelectric valve for controlling fluid flow through valve ports comprises a fluidtight valve body and a diaphragm. The valve body defines valve ports, and the diaphragm includes a plurality of piezoelectric members, the members being adapted to be selectively piezoelectrically deflected in opposite directions in a plane of operation thereof to produce a cumulative excursion to selectively block or unblock the valve ports. The enhanced cumulative excursion enables valve ports of greater cross-sectional area to be employed.
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