Piezoelectric pump for household electric appliance
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United States of America Patent
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Sep 3, 2013
Grant Date -
Dec 8, 2011
app pub date -
Nov 30, 2009
filing date -
Dec 10, 2008
priority date (Note) -
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Abstract
Piezoelectric pump for a household electric appliance having a moving wall interposed between a first casing element defining a pumping chamber with the moving wall, and a second casing element applying pressure to the periphery of the moving wall in order to hold the latter in position. The moving wall has an exterior face in contact with a piezoelectric actuator designed to cause the moving wall to move so as to bring about a periodic variation in the volume of the pumping chamber under the action of the piezoelectric actuator wherein the first casing element and the second casing element are held together under stress by an elastic clip, the elastic clip applying a pressure that tends to compress the first casing element onto the second casing element.
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