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. 14, 2015
Filed:
Jun. 18, 2013
Applicant:
Panasonic Corporation, Osaka, JP;
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 1/00 (2006.01); H04R 31/00 (2006.01); H04R 9/02 (2006.01);
U.S. Cl.
CPC ...
H04R 1/00 (2013.01); H04R 9/02 (2013.01); H04R 31/006 (2013.01); H04R 2499/13 (2013.01);
Abstract
A magnetic circuit includes an upper plate, a magnet, a lower plate, and a center pole. The outer circumference of a frame is coupled with a diaphragm. One end of a voice coil is coupled with the diaphragm, and the other end is inserted into a magnetic gap formed between the upper plate and the center pole. The frame is provided with a through hole. An insertion part provided on the outer circumference of the upper plate is inserted into the through hole. The frame is coupled with the upper plate by bending the insertion part.