ALEXANDRIA, Va., March 24 -- United States Patent no. 12,587,793, issued on March 24, was assigned to AAC Microtech (Changzhou) Co. Ltd. (Changzhou, China).
"Sounding device" was invented by Wei Pang (Changzhou, China) and Zhenhua Gu (Changzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure discloses a sounding device including a frame, a vibration system mounted on the frame, including a diaphragm fixed to the frame and enclosing a front cavity with the frame; and a magnet system configured to drive the vibration system to generate sound, enclosing a rear cavity with the diaphragm and the frame; a connection hole is provided on the frame for connecting the front cavity with the...