Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2006-01-10
2006-01-10
Dougherty, Thomas M. (Department: 2834)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S321000, C310S367000
Reexamination Certificate
active
06984922
ABSTRACT:
A composite piezoelectric transducer of the present invention includes a plurality of arranged piezoelectric elements, and dielectric portions positioned between the plurality of piezoelectric elements. In the composite piezoelectric transducer, an area of a cross-section perpendicular to an ultrasonic emitting direction in at least one piezoelectric element of the plurality of piezoelectric elements varies along the ultrasonic emitting direction.
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Asai Katsuhiko
Hashimoto Masahiko
Nagahara Hidetomo
Suginouchi Takehiko
Akin Gump Strauss Hauer & Feld & LLP
Dougherty Thomas M.
Matsushita Electric - Industrial Co., Ltd.
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