ALEXANDRIA, Va., July 3 -- United States Patent no. 12,343,785, issued on July 1, was assigned to TECHWAY INDUSTRIAL Co. LTD. (Taichung, Taiwan).
"Power tool" was invented by Chih-Hua Hsu (Taichung, Taiwan) and Liang Huan Chen (Taichung, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A power tool has a body, a trigger, a motor, a shaft set, a ball screw, and a pre-fastening module. The pre-fastening module has a first pre-fastening detecting member and a second pre-fastening detecting member. The first pre-fastening detecting member is moved with a connecting shaft of the shaft set in an axial direction. The second pre-fastening detecting member is located on a moving path of the ball screw. When a th...