ALEXANDRIA, Va., March 26 -- United States Patent no. 12,257,676, issued on March 25, was assigned to Hilti AG (Schaan, Liechtenstein).

"Power tool with threaded spindle drive" was invented by Florian Schmid (Buchs, Switzerland) and Albert Binder (Buchs, Switzerland).

According to the abstract* released by the U.S. Patent & Trademark Office: "A power tool is provided comprising a drive, an output shaft, a threaded spindle drive and a linear actuator, wherein torque generated by the drive is transmissible via the output shaft, and the threaded spindle drive connected to the output shaft, to the linear actuator. the threaded spindle drive has an inner threaded spindle part with an external thread and an outer threaded spindle part with an i...