ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,444,557, issued on Oct. 14, was assigned to ABB S.p.A. (Milan).
"Low voltage switch pole" was invented by Pierantonio Arrighetti (Bossico, Italy) and Michele Ceroni (Bedulita, Italy).
According to the abstract* released by the U.S. Patent & Trademark Office: "A switch pole for a low voltage switching device including an insulating casing defining an internal space with a contact region and an arc extinguishing region of said switch pole, a fixed contact assembly and a movable contact assembly positioned in said contact region and including, respectively, one or more fixed contacts and one or more movable contacts, which can be mutually coupled or uncoupled, and an arc chamber positio...