Cell driving type piezoelectric/electrostrictive actuator...

Details Cell driving type piezoelectric/electrostrictive actuator... Cell driving type piezoelectric/electrostrictive actuator...

2007-08-28

2007-08-28

Schuberg, Darren E. (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S364000, C310S366000, C347S068000, C347S071000, C347S072000, C347S070000

Reexamination Certificate

active

10855448

ABSTRACT:
A piezoelectric actuator1capable of being driven with a high electric field intensity, obtaining a larger displacement and being high in electric conducting reliability of electrodes, and comprising: at least one cell3defined by two side walls6, a substrate2and a ceiling wall7; the two side walls being disposed on the substrate and being covered with the ceiling wall to define one cell, at least the two side walls6comprising piezoelectric/electrostrictive devices4, and the piezoelectric/electrostrictive devices4being capable of changing a volume of the cell3by displacement of the walls. Each of the piezoelectric/electrostrictive devices4comprises a plurality of layered piezoelectric/electrostrictive bodies14and electrodes18, 19which are alternately stacked, and end portions of the electrodes18, 19are embedded in the piezoelectric/electrostrictive bodies14in at least the internal side of the cell3.

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