Piezoelectric actuator
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United States of America Patent
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Sep 20, 2011
Grant Date -
Oct 21, 2010
app pub date -
Feb 14, 2007
filing date -
Feb 14, 2006
priority date (Note) -
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Abstract
A piezoelectric actuator (2) comprising a stack of one or more piezoelectric elements (4) defining an external surface, and passivation means (20) applied to the external surface of the stack, wherein the passivation means (20) includes a self-supporting polyimide material (20b) (e.g. in the form of a layer, film or membrane).
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