HIGH TEMPERATURE BIMORPH ACTUATOR
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United States of America Patent
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Issued Date -
Sep 4, 2008
app pub date -
Mar 2, 2007
filing date -
Mar 2, 2007
priority date (Note) -
Abandoned
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Abstract
A bimorph actuator has been found that uses commonly available piezoelectric material and is operational up to about 150.degree. C. or one half of Curie temperature, in that it does not exhibit depolarization due to negative electric fields and/or elevated temperature. This result is accomplished by driving both piezoelectric materials with a positive electric field along the polarization direction.
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