ALEXANDRIA, Va., May 26 -- United States Patent no. 12,636,769, issued on May 26, was assigned to Andreas Stihl AG & Co. KG (Waiblingen, Germany).
"Chain saw or cutoff machine" was invented by Georg Heinzelmann (Winnenden, Germany), Johann-Sebastian Renz (Gomaringen, Germany) and Marco Weber (Backnang, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus has a tool having a tool plane and a handle. A longitudinal direction runs in the direction from the handle to the tool. An outer housing has an opening for cooling air. An electric motor is disposed in the housing and an air filter disposed on or in the opening. In a resting position on a horizontal plane, the base faces the plane. A cover li...