ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,420,386, issued on Sept. 23, was assigned to Nanjing Chervon Industry Co. Ltd. (Nanjing, China).
"Power tool" was invented by Hanqing Zheng (Nanjing, China), Xiangqing Fu (Nanjing, China), Changwei Zuo (Nanjing, China), Shubin Tong (Nanjing, China), Xu Wang (Nanjing, China) and Binbin Chen (Nanjing, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A power tool includes a main housing, a drive mechanism, a working head, and a connection assembly. The connection assembly includes an input portion connected to the drive mechanism and an output portion connected to an output shaft. The connection assembly rotates the working head about a first axis rel...