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:
Dec. 02, 2014
Filed:
Mar. 05, 2008
Applicants:
Takeshi Fujita, Kobe, JP;
Hiroshi Kubota, Kobe, JP;
Inventors:
Takeshi Fujita, Kobe, JP;
Hiroshi Kubota, Kobe, JP;
Assignee:
TOA Corporation, Kobe-shi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R 1/00 (2006.01); H04R 7/02 (2006.01); G10K 13/00 (2006.01); H04R 7/14 (2006.01);
U.S. Cl.
CPC ...
H04R 7/14 (2013.01);
Abstract
The present invention provides a dome diaphragm having high strength wholly and uniformly while maintaining a small thickness of a dome portion. A diaphragmaccording to the present invention is a dome diaphragm including a dome portion. The dome portionis divided into a plurality of small portions, and a ridge portionis formed at a boundary of the small portions. In accordance with this configuration, the ridge portionsexist over the entire dome portion, and the ridge portionscan serve as frames for reinforcing the dome portion