ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,483,836, issued on Nov. 25, was assigned to AAC Microtech (Changzhou) Co. Ltd. (Changzhou, China).
"Coaxial speaker" 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: "A coaxial speaker is disclosed. The coaxial speaker includes a magnetic circuit system and two sounding units. The magnetic circuit system includes a ring magnetic unit, a magnet and a yoke arranged on an outer side of the ring magnetic unit, and a first ring magnet sleeved on an insert inserted into an inner side of the ring magnetic unit. Magnetic polarit...