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:
May. 16, 2023
Filed:
May. 20, 2021
Almus Corp., Chungcheongnam-do, KR;
Ju Heon Ko, Gyeonggi-do, KR;
Byung Il Min, Gyeonggi-do, KR;
Jeong Kwon Park, Gyeonggi-do, KR;
Yun Uk Ha, Incheon, KR;
JongWon Lee, Incheon, KR;
Seo Young Kim, Gyeonggi-do, KR;
Soon Hyuk Hong, Gyeonggi-do, KR;
ALMUS Corp., Chungcheongnam-do, KR;
Abstract
A speaker unit for an earphone is provided. The speaker unit for an earphone may include a frame; a magnet; a plate fixed to the frame and in contact with the magnet; a diaphragm; a coil disposed to overlap the magnet and the plate in a radial direction; and a flexible printed circuit board (FPCB), wherein the magnet includes a first surface and a second surface arranged on an outer surface of the magnet, the first surface is a surface in contact with an inner surface of the frame, the second surface is a surface spaced apart from the inner surface of the frame, and the frame forms a first sound emission path defined by a space between the inner surface thereof and the second surface of the magnet in the radial direction.