ALEXANDRIA, Va., June 18 -- United States Patent no. 12,325,110, issued on June 10, was assigned to Dongguan USun Technology Co. Ltd. (Dongguan, China).
"Impact contact surface shape of an impact wrench" was invented by Zhaojun Shi (Dongguan, China) and Canquan Huang (Dongguan, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "An impact contact surface shape of an impact wrench. The impact wrench comprises a rotary shaft that acts on the workpiece and an impact block sleeved on the rotary shaft to drive the rotary shaft to rotate. One end of the rotary shaft is at least configured with a stopping block to collide with the impact block. The impact block is at least configured with a locking block to collid...