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:
Oct. 03, 2023
Filed:
Mar. 21, 2022
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventor:
Yuki Kobayashi, Osaka, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 9/06 (2006.01); H04R 7/12 (2006.01); H04R 9/02 (2006.01); H04R 9/04 (2006.01); H04R 7/18 (2006.01);
U.S. Cl.
CPC ...
H04R 9/06 (2013.01); H04R 7/12 (2013.01); H04R 7/18 (2013.01); H04R 9/025 (2013.01); H04R 9/04 (2013.01); H04R 2400/11 (2013.01);
Abstract
A loudspeaker device includes: a magnetic circuit that includes a yoke, a magnet, and a top plate; a voice coil body; a diaphragm; and a frame that holds the yoke and the diaphragm. The frame includes a through hole that holds the yoke at a predetermined position with the yoke being inserted into the through hole. The yoke includes a protrusion portion that abuts an outer peripheral surface portion of the frame that defines the through hole, with the magnetic gap being inside the frame.