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:
Jun. 30, 2026
Filed:
May. 17, 2024
Merry Electronics (Suzhou) Co., Ltd., Jiangsu Province, CN;
Jingui Wang, Jiangsu Province, CN;
MERRY ELECTRONICS (SUZHOU) CO., LTD., Jiangsu Province, CN;
Abstract
A miniature loudspeaker comprises a housing, a magnetic circuit system arranged in the accommodating space of the housing and provided with a first tuning hole, a vibration system arranged at the opening of the housing and including a voice coil and a diaphragm which provided with a second tuning hole, a damper provided with a third tuning hole, and a control circuit. Two ends of the damper are respectively connected with the magnetic circuit system and the diaphragm. A resonant cavity is formed between the magnetic circuit system and the housing. The first tuning hole, the third tuning hole and the second tuning hole cooperate to form a sound guide channel connecting the outside and the resonant cavity. The control circuit inputs direct-current bias current to the voice coil to adjusts initial position of the diaphragm, and the damper lengthens or shortens with the change of the initial position.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile