ALEXANDRIA, Va., July 23 -- United States Patent no. 12,366,127, issued on July 22, was assigned to Weatherford Technology Holdings LLC (Houston).
"Electric tong with onboard hydraulic power unit" was invented by Frank Wern (Hannover, Germany), Bjoern Thiemann (Burgwedel, Germany), Thomas Kotschy (Burgdorf, Germany) and Michael Wiedecke (Salzhemmendorf, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method and apparatus for local hydraulic power generation on an electric tong, including a power tong for spinning tubulars; a first electric motor functionally connected to the power tong; a plurality of hydraulic power consumers including a backup tong for clamping a tubular string; a second electric ...