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:
Dec. 21, 2021
Filed:
Mar. 10, 2020
Em-tech Co., Ltd., Gyeongsangnam-do, KR;
Cheon Myeong Kim, Gyeongsangnam-do, KR;
Jae Hwa Lim, Gyeongsangnam-do, KR;
Jeong Ae Ha, Gyeongsangnam-do, KR;
Ji Young Lee, Gyeongsangnam-do, KR;
Byung Ho Jung, Gyeongsangnam-do, KR;
Sung Jin Hong, Gyeonggi-do, KR;
EM-TECH CO., LTD., Gyeongsangnam-Do, KR;
Abstract
A bone conduction speaker is provided. The bone conduction speaker includes: a housing forming an exterior; a stator including a pole piece fitted to a bottom of the housing and a voice coil arranged to an outer circumference of the pole piece; a vibrator including a permanent magnet mounted concentrically with the pole piece and voice coil, with an air gap from the pole piece, a weight attached to the permanent magnet to increase a vibration force, and a yoke attached to the permanent magnet and weight; a flexible printed circuit board mounted on the bottom of the housing, part of which extends out of the housing, and configured to transmit a signal to the voice coil; and a bone conduction pad attached to an outer surface of the housing. The vibration of the vibrator is transmitted to a bone of a user through the housing and bone conduction pad.