Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2008-04-16
2009-06-16
Leung, Quyen (Department: 2834)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S334000
Reexamination Certificate
active
07548014
ABSTRACT:
An ultrasonic transducer includes a cylindrical cap member having a bottom. A piezoelectric element is bonded to the inner side of a bottom portion of the cap member using a conductive adhesive or other suitable adhesive. An inner frame made of a material having an acoustic impedance greater than that of the cap member is fitted into the cap member so as to be in contact with a side portion, including the end portion, of the cap member. Through-holes are provided in the side portion of the inner frame. Lead wires are connected to the piezoelectric element and the inner frame, respectively. A sound absorber and a damper are inserted into the inner frame. The damper is in direct contact with the side portion of the cap member via the through-holes of the inner frame.
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patent: 6876127 (2005-04-01), Mitsuoka et al.
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Official communication issued in the International Application No. PCT/JP2006/324771, mailed on Apr. 10, 2007.
Asada Takaaki
Furuya Mio
Murata Koji
Shimamoto Takayuki
Addison Karen B
Keating & Bennett LLP
Leung Quyen
Murata Manufacturing Co. Ltd.
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