ALEXANDRIA, Va., June 4 -- United States Patent no. 12,318,903, issued on June 3, was assigned to Nanjing Chervon Industry Co. Ltd. (Nanjing, China).
"Power tool and hammer drill" was invented by Yang Li (Nanjing, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A power tool includes a motor, a drive mechanism, and an impact mechanism. The drive mechanism is capable of driving a tip functional element to rotate about an output axis. The impact mechanism is capable of abutting against the tip functional element and capable of driving the tip functional element. The impact mechanism includes an impact rod, an impact power piece, and an impact block. The impact rod abuts against the tip functional element. ...