ALEXANDRIA, Va., June 9 -- United States Patent no. 12,284,937, issued on April 29, was assigned to Andreas Stihl AG & Co. KG (Waiblingen, Germany).
"Work apparatus" was invented by Denis Ehrler (Wernau, Germany), Matthias Maier (Waiblingen, Germany) and Anton Angelusch (Waiblingen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A work apparatus includes a housing, an electric motor arranged in the housing, the electric motor including a rotor shaft driven rotationally about a rotor axis, an output shaft for driving a tool, the output shaft being connected with a form fit to the rotor shaft on a receptacle of the rotor shaft, and a flange supported on the housing. The rotor shaft is mounted rotatably...