ALEXANDRIA, Va., June 19 -- United States Patent no. 12,334,799, issued on June 17, was assigned to ZF Friedrichshafen AG (Friedrichshafen, Germany).
"Vented electric drive unit for a vehicle" was invented by Andreas Holzlohner (Langenargen, Germany), Vyacheslav Brushkivskyy (Kressbronn, Germany) and Marcel Neurohr (Friedrichshafen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a drive unit (1) comprising a housing (2), an electric motor (3) disposed inside the housing, and at least one oil chamber (15) which is disposed in the housing (2). The oil chamber (15) comprises an oil region (21) and an air region (22) and is closed off to the outside by a housing cover (35). The housing cover...