Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2006-10-24
2006-10-24
Dougherty, Thomas M. (Department: 2834)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S328000, C029S025350
Reexamination Certificate
active
07126261
ABSTRACT:
A piezoelectric/electrostrictive device10includes a stationary portion11; a thin-plate portion12supported by the stationary portion; and a piezoelectric/electrostrictive element14including a plurality of electrodes and a plurality of piezoelectric/electrostrictive layers arranged alternatingly In layers. The piezoelectric/electrostrictive device10is manufactured by the steps of forming a piezoelectric/electrostrictive laminate by alternatingly laminating laminar electrodes and piezoelectric/electrostrictive layers on a plane of a thin-plate member adapted to form the thin-plate portion12, and cutting the thin-plate member and the piezoelectric/electrostrictive laminate. The cutting step is performed by advancing a wire member (wire saw) reciprocating in a direction parallel to the direction of lamination of the piezoelectric/electrostrictive laminate while holding the wire member substantially parallel to the direction of lamination. Thus, since the laminar electrodes are cut while being extended within corresponding layer planes, the degree of covering the end surfaces of the piezoelectric/electrostrictive layers decreases.
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Ikeda Koji
Shibata Kazuyoshi
Watanabe Masashi
Burr & Brown
Dougherty Thomas M.
NGK Insulators Ltd.
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