US Patent Issued to 3M Innovative Properties on June 2 for "Sensored bushing" (German Inventors)

ALEXANDRIA, Va., June 2 -- United States Patent no. 12,644,909, issued on June 2, was assigned to 3M Innovative Properties Co. (St. Paul, Minn.).

"Sensored bushing" was invented by Gunther A. J. Stollwerck (Krefeld, Germany) and Mark Gravermann (Erkelenz, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "Bushing for connecting a separable connector to a switchgear or to a transformer in a national grid for distributing electrical power at medium or high voltages. The bushing comprises a) a bushing body of a solidified, electrically insulating casting material; b) a bushing conductor, embedded in the casting material, for conducting power at medium or high voltages into the switchgear or the transformer,...