Vibratory actuator
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United States of America Patent
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Apr 16, 2013
Grant Date -
Jun 30, 2011
app pub date -
Dec 27, 2010
filing date -
Dec 25, 2009
priority date (Note) -
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Abstract
In an ultrasonic actuator, piezoelectric layers and internal electrode layers are stacked. External electrodes are formed on a principal surface exposed to an outside of the outermost piezoelectric layer. Side electrodes connected to the internal electrode layers and the external electrodes are formed on side surfaces of a body including the piezoelectric layers and the internal electrode layers. A first divided electrode and a first external electrode are connected together by a plurality of side electrodes. A second divided electrode and a second external electrode are connected together by a plurality of side electrodes. A minus electrode layer and a third external electrode are connected together by a plurality of side electrodes.
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