Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2005-12-06
2008-11-04
Dougherty, Thomas M. (Department: 2834)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
Reexamination Certificate
active
07446455
ABSTRACT:
An upper electrode (50) includes a first electrode section (51) formed in a circular shape and a second electrode section (52) and a third electrode section (53) formed in a fan-shaped manner outside of the first electrode section (51). The first, second, and third electrode sections (51to53) are electrically separated from one another via an insulating region. A lower electrode (30) includes a fourth electrode section (31) formed in a circular shape and a fifth electrode section (32) and a sixth electrode section (33) formed in a fan-shaped manner outside of the fourth electrode section (31). Similarly, the fourth, fifth, and sixth electrode sections (31to33) are electrically separated from one another via an insulating region. Further, the fourth electrode section (31) is provided so as to face the first electrode section (51) via the piezoelectric body (40), the fifth electrode section (32) is provided so as to face the second electrode section (52) via the piezoelectric body (40), and the sixth electrode section (33) is provided so as to face the third electrode section (53) via the piezoelectric body (40), respectively.
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Iwasaki Tomohiro
Nakatsuka Hiroshi
Onishi Keiji
Addison Karen
Dougherty Thomas M.
Matsushita Electric - Industrial Co., Ltd.
Wenderoth , Lind & Ponack, L.L.P.
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