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:
Mar. 20, 2012
Filed:
Nov. 17, 2006
Applicants:
Daisuke Itoh, Tendo, JP;
Teruaki Kaiya, Tendo, JP;
Kenta Fujimoto, Tendo, JP;
Inventors:
Assignees:
Pioneer Corporation, Tokyo, JP;
Tohoku Pioneer Corporation, Yamagata, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A speakerincludes: a framea magnetic circuitand a vibrating unit. The magnetic circuitis attached to the frame. The vibrating unitis received in the frame, and includes a drive coneand a diaphragmvibrated by the magnetic circuit. A space surrounded by the drive cone, the diaphragmand the frameis sealed. An edge unitis attached to an outer edge of the drive cone. The edge unitis in an arc sectional shape, and integrally includes two roll partsarranged coaxially to each other.