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. 17, 2026
Filed:
Apr. 08, 2024
Almus Corp., Chungcheongnam-do, KR;
Jong Won Lee, Incheon, KR;
Yun UK Ha, Incheon, KR;
Jeong Kwon Park, Gyeonggi-do, KR;
Soon Hyuk Hong, Gyeonggi-do, KR;
Ji Wook Choi, Gyeonggi-do, KR;
ALMUS Corp., Chungcheongnam-do, KR;
Abstract
A speaker unit for an earphone includes a frame including an internal accommodation space; a low-frequency diaphragm; a low-frequency voice coil of a tubular structure connected to the low-frequency diaphragm; a center magnet disposed at the center of the low-frequency voice coil; a first ring-shaped magnet disposed between the center magnet and the low-frequency voice coil; a second ring-shaped magnet disposed on an outer side of the low-frequency voice coil; a high-frequency voice coil disposed on an outer side of the center magnet and including a tubular structure; a flexible substrate disposed on an outer side of the high-frequency voice coil; a coil fixing plate having a plate-shaped structure with one side being coupled to the high-frequency voice coil and another side being coupled to the flexible substrate; and a high-frequency diaphragm disposed above the coil fixing plate and configured to vibrate.