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:
Feb. 23, 2016
Filed:
Jun. 18, 2014
Applicant:
Jvc Kenwood Corporation, Yokohama-shi, Kanagawa, JP;
Inventor:
Hiroyuki Kumakura, Yokohama, JP;
Assignee:
JVC KENWOOD CORPORATION, Yokohama-Shi, Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
H04R 1/00 (2006.01); H04R 1/02 (2006.01); H04R 9/06 (2006.01); H04R 11/02 (2006.01); H04R 9/02 (2006.01);
U.S. Cl.
CPC ...
H04R 9/022 (2013.01); H04R 1/00 (2013.01); H04R 9/025 (2013.01);
Abstract
A yoke includes a disk-like base end portion and a columnar center pole protruding from a center portion of the base end portion. An annular magnet is arranged on the base end portion. An annular top plate is arranged on the magnet so that an inner circumferential surface thereof is opposite to an outer circumferential surface of the center pole. A non-magnetic ring member is arranged on an inner circumferential surface side of the magnet, the non-magnetic ring member having a same inner circumferential diameter as an inner circumferential diameter of the top plate.