US Patent Issued to AAC Microtech (Changzhou) on Sept. 9 for "Multi-functional sound-generating device" (Chinese Inventors)

ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,413,911, issued on Sept. 9, was assigned to AAC Microtech (Changzhou) Co. Ltd. (Changzhou, China).

"Multi-functional sound-generating device" was invented by Bo Xiao (Changzhou, China), Ronglin Linghu (Changzhou, China) and Lubin Mao (Changzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A multi-functional sound-generating device, including an enclosure with an accommodating space and a sound outlet, a sound-generating unit in the accommodating space and a motor assembly. The sound-generating unit includes a cone frame fixed to the enclosure, a vibration system and a magnetic circuit system fixed to the cone frame. The magnetic circuit system...