ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,525,904, issued on Jan. 13, was assigned to Hilti AG (Schaan, Liechtenstein).
"Electric drive unit for a hand-held power tool" was invented by Torsten Engler (Herrsching, Germany) and Michael Herzig (Landsberg, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "Electric drive unit with a brushless DC motor and with a switching bridge for sensor-controlled commutation of the DC motor by at least one Hall sensor included in the DC motor, the Hall sensor being connected to the switching bridge and set up to detect an angle of rotation of the DC motor, and the drive unit also having a control unit, which is connected to the switching bridge and by which...