ALEXANDRIA, Va., June 17 -- United States Patent no. 12,317,047, issued on May 27, was assigned to AAC Microtech (Changzhou) Co. Ltd. (Changzhou, China).
"Vibration sounding device" was invented by Zhang Ren (Shenzhen, China), Ronglin Linghu (Shenzhen, China) and Wei Song (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A vibration sounding device includes a housing, a sounding unit, and a motor vibration system. The motor vibration system includes a vibration unit and elastic components, and the vibration unit includes coils. The sounding unit includes a frame, a vibration system, a magnetic circuit system, and a front cover. The vibration system includes a first vibration system and a second...