ALEXANDRIA, Va., June 17 -- United States Patent no. 12,311,259, issued on May 27, was assigned to AAC Acoustic Technologies (Shanghai) Co. Ltd. (Shanghai).
"Force feedback device" was invented by Lijin Zhang (Shenzhen, China), Bing Xie (Shenzhen, China), Yuntong Li (Shenzhen, China) and Liang Jiang (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A force feedback device includes a fixed portion, a button hinged to the fixed portion, an driving arm connected to a bottom of the button, and a driving assembly connected to one end of the driving arm away from the button; the fixed portion includes a fixed portion body and a bearing mounted at one end of the fixed portion body; the button includes...