ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,477,279, issued on Nov. 18, was assigned to AAC Microtech (Changzhou) Co. Ltd. (Changzhou, China).
"Multifunctional sounder" was invented by Huhu Yang (Changzhou, China), Wei Wei (Changzhou, China), Zhaoyu Yin (Changzhou, China) and Zhizhu Chen (Changzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a multifunctional sounder, including a casing having an accommodating cavity, and a sounding unit and at least one driving coil group that are arranged in the accommodating cavity. The sounding unit includes a sounding diaphragm system and a magnetic circuit system configured to drive the sounding diaphragm system alo...