ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,539,584, issued on Feb. 3, was assigned to HAZET-WERK HERMANN ZERVER GMBH & Co. KG (Remscheid, Germany).
"Torque screwdriver" was invented by Patrick Klatt (Hagen, Germany) and Christian Ballsieper (Remscheid, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A torque screwdriver includes a handle and a display for a torque which has been set, and has an output. A setting device for setting a torque and a torque mechanism in the handle, the torque mechanism including a driveshaft for transmitting a torque and a release mechanism for interrupting a transmission of torque when a torque which has been set is reached. The driveshaft and the output are c...