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:
Jun. 23, 2015
Filed:
Apr. 14, 2011
Applicant:
Sawako Kano, Hyogo, JP;
Inventor:
Sawako Kano, Hyogo, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R 25/00 (2006.01); H04R 17/00 (2006.01);
U.S. Cl.
CPC ...
H04R 17/00 (2013.01);
Abstract
A piezoelectric speaker includes: a diaphragm which includes a substrate and a plurality of piezoelectric elements arranged on the substrate; and a frame for supporting the substrate at an outer peripheral portion thereof. The plural piezoelectric elements include first piezoelectric elements each having a first number of layers, and second piezoelectric elements each having a second number of layers, the first number of layers being larger than the second number of layers. Moreover, the second piezoelectric elements may be arranged farther from the center of the substrate than the first piezoelectric elements.