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:
Sep. 17, 2002
Filed:
Nov. 04, 1999
Applicant:
Inventors:
Takashi Ogura, Osaka, JP;
Kousaku Murata, Hyogo, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 2/500 ;
U.S. Cl.
CPC ...
H04R 2/500 ;
Abstract
A piezoelectric speaker includes a frame; a vibrating plate; a piezoelectric element provided on the vibrating plate; a damper connected to the frame and to the vibrating plate for supporting the vibrating plate so that the vibrating plate linearly vibrates; and an edge for preventing air from leaking through a gap between the vibrating plate and the frame.