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. 25, 2009
Filed:
Sep. 22, 2005
Applicants:
Yoshio Ohashi, Kanagawa, JP;
Masaru Uryu, Chiba, JP;
Inventors:
Yoshio Ohashi, Kanagawa, JP;
Masaru Uryu, Chiba, JP;
Assignee:
Sony Corporation, , JP;
Primary Examiner:
Int. Cl.
CPC ...
H04R 25/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A loudspeaker apparatus in which a diaphragm is reinforced easily and favorably. The loudspeaker apparatus includes a loudspeaker diaphragm formed by joining a domed diaphragm and an edge-like diaphragm and vibrated using a voice coil, and a reinforcement ring reinforcing a junctional flat portion or the vicinity of the junctional flat portion of the diaphragm. The reinforcement ring is formed of a permeable material, and the permeable reinforcement ring is stuck to the junctional flat portion or the vicinity of the junctional flat portion of the diaphragm.