ALEXANDRIA, Va., March 3 -- United States Patent no. 12,568,334, issued on March 3, was assigned to AAC Microtech (Changzhou) Co. Ltd. (Changzhou, China).
"Speaker" was invented by Chao Zhang (Changzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A speaker is disclosed. The speaker includes a vibration system, a magnetic circuit system, and a frame for fixing the vibration system and the magnetic circuit system. The vibration system includes a diaphragm and a voice coil driving the diaphragm for vibrating and sounding. The diaphragm includes a dome and a suspension surrounding the dome, and the dome and the suspension are integrally formed. The dome is provided with a positioning through hole for e...