ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,731,967, issued on Sept. 8, was assigned to ABB SCHWEIZ AG (Baden, Switzerland).
"Metal enclosure for electrical switchgear" was invented by Dag Erik Skagmo (Svarstad, Norway), Terje Thingstad Pettersen (Skien, Norway) and Magnus Bjerkely (Porsgrunn, Norway).
According to the abstract* released by the U.S. Patent & Trademark Office: "A metal enclosure for electrical switchgear, the metal enclosure is configured to be pressurized above atmospheric pressure, the metal enclosure having: metal walls sealing a volume for accommodating the electrical switchgear, the metal walls including a first metal wall arranged opposite a second metal wall, wherein at least the second metal wall is a c...