Communications: electrical – Audible indication – Piezoelectric
Reexamination Certificate
2007-08-01
2010-06-01
Goins, Davetta W (Department: 2612)
Communications: electrical
Audible indication
Piezoelectric
C310S330000, C310S311000
Reexamination Certificate
active
07728716
ABSTRACT:
A piezoelectric buzzer includes a housing unit, a buzzer unit, and first and second terminals. The housing unit includes first and second housings coupled together. The second housing includes a base plate and a pair of spaced apart insert seats, each of which protrudes inwardly from the base plate toward the first housing and is formed with an insert hole. The buzzer unit is disposed in the resonant chamber and includes a vibrating plate and a piezoelectric plate attached to the vibrating plate. The first and second terminals are inserted respectively into the insert holes of the insert seats, and have a respective connection section extending outwardly of the housing unit, and a respective extending section abutting against a respective one of the vibrating plate and the piezoelectric plate.
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Chuang Wu-Song
Hsieh Huey-Lin
Huang Tsai-Kun
Lin Chun-Jung
Wey Jyh-Jang
China Steel Corporation
Davidson Berquist Jackson & Gowdey LLP
Goins Davetta W
Lau Hoi C
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