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:
Jan. 31, 2012
Filed:
Jul. 26, 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 a piezoelectric electroacoustic transducing device which is to be incorporated in an electronic apparatus such as a portable telephone, and which is used as a sound source, the sound pressure of the low-frequency range is improved, the productivity is improved, and acoustic characteristics are stabilized. A piezoelectric electroacoustic transducing devicehas: a frame; a piezoelectric vibratorin which piezoelectric elementsA,B are bonded to a metal plate; and a plate- and ring-like support memberwhich supports a peripheral portion of the piezoelectric vibratoron the frame. A stepC corresponding to the thickness of the metal plateis disposed in the support member, and the metal plateis adhered to the inside of the stepC in an embedded manner.