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:
Apr. 24, 2012
Filed:
Feb. 11, 2009
Applicants:
Junji Iino, Gunma-ken, JP;
Shinji Kamimura, Gunma-ken, JP;
Satoshi Imamura, Gunma-ken, JP;
Inventors:
Assignee:
Victor Company of Japan, Limited, Yokohama, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R 9/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A voice coil includes a cylindrical bobbin formed of a first material; a coil which surrounds on an outer circumferential surface of the bobbin; and a plurality of reinforcement members formed of a material having a propagation speed faster than the first material and provided on the outer circumferential surface of the cylindrical bobbin.