Metal working – Piezoelectric device making
Reexamination Certificate
2005-03-15
2005-03-15
Tugbang, A. Dexter (Department: 3729)
Metal working
Piezoelectric device making
C029S830000, C029S832000, C381S190000
Reexamination Certificate
active
06865785
ABSTRACT:
A piezoelectric speaker is manufactured by processing a plate to form a frame, a plurality of vibrating plates and a plurality of dampers. The plurality of dampers are connected to the frame and the plurality of vibrating plates so that each of the plurality of vibrating plates linearly vibrates. At least one piezoelectric element is arranged on the plurality of vibrating plates. An edge is formed for preventing air from leaking through a gap among the plurality of vibrating plates, the plurality of dampers, and the frame.
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European Search Report dated May 22, 2002, application No. EP 99 12 0985.
Murata Kousaku
Ogura Takashi
Matsushita Electric - Industrial Co., Ltd.
Nguyen Tai Van
RatnerPrestia
Tugbang A. Dexter
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