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:
Aug. 11, 2015
Filed:
Jan. 29, 2013
Panasonic Corporation, Osaka, JP;
Sawako Kano, Hyogo, JP;
Toshiyuki Matsumura, Osaka, JP;
Abstract
A speakerincludes: a plurality of piezoelectric diaphragmsandeach including a substrate and a piezoelectric element provided on at least one surface of the substrate; one or a plurality of connecting membersconnecting the plurality of piezoelectric diaphragmsandto each other such that the plurality of piezoelectric diaphragmsandaligned from the piezoelectric diaphragmlocated at a frontmost side of the speaker, in a thickness direction of the piezoelectric diaphragm, and the piezoelectric diaphragmsandadjacent to each other face each other at an interval; a support membersupporting the back-side diaphragmthat is a piezoelectric diaphragm at a backmost side of the speaker. The plurality of piezoelectric diaphragmsandinclude two piezoelectric diaphragmsandhaving stiffnesses different from each other.