The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 08, 2009
Filed:
Jul. 19, 2007
Satoru Fujiwara, Osaka, JP;
Yuka Nagata, Osaka, JP;
Satoru Fujiwara, Osaka, JP;
Yuka Nagata, Osaka, JP;
Hosiden Corporation, Yao-shi, Osaka, JP;
Abstract
In order to simultaneously realize both improvements of the acoustic performance of a bimorph piezoelectric electroacoustic transducing device and the productivity, in a bimorph piezoelectric vibratorin which a disk-like first piezoelectric elementis bonded to a first principal surfaceof a metal plate, and a disk-like second piezoelectric elementis bonded to a second principal surfaceof the metal plate, the diameter Rof the first piezoelectric elementis different from the diameter Rof the second piezoelectric element. Furthermore, the diameter Rof the second piezoelectric elementis made smaller than the diameter Rof the first disk-like piezoelectric element, and a lead-wire soldering portionis ensured on the second principal surfaceof the metal platewhich is in the periphery of the second piezoelectric element