ALEXANDRIA, Va., June 19 -- United States Patent no. 12,334,858, issued on June 17, was assigned to Braun GMBH (Kronberg, Germany).
"Small electrical appliance with improved motor speed control" was invented by Ferdinand Hermann (Koenigstein, Germany), Torsten Klemm (Eschborn, Germany) and Timo Schmitt (Hintertiefenbach, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to the field of a small electrical appliance, in particular hair removal device or toothbrush, comprising an electric DC motor; a detector for acquiring a detector signal indicative of a rotational speed of the electric DC motor; and a controller for controlling the electric DC motor. The controller is adapt...