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. 01, 2024
Filed:
Dec. 06, 2021
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventors:
Satoshi Obase, Osaka, JP;
Koichi Muramatsu, Osaka, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 1/10 (2006.01); H04R 7/00 (2006.01); H04R 9/02 (2006.01);
U.S. Cl.
CPC ...
H04R 1/1016 (2013.01); H04R 7/00 (2013.01); H04R 9/02 (2013.01); H04R 2400/11 (2013.01);
Abstract
A speaker unit incorporated in a housing of an earphone includes: a frame having a cylindrical shape; a diaphragm emitting sound; and a board to which a wiring line of a coil provided to the diaphragm is connected. The frame has a space inside, and the diaphragm and the board are placed inside the frame with the space interposed between the diaphragm and the board.