ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,451,302, issued on Oct. 21, was assigned to ABB Schweiz AG (Baden, Switzerland).
"Three-phase arc quenching device with two pistons" was invented by James Mannekutla (Vasteras, Sweden), Elisabeth Lindell (Vasteras, Sweden) and Ola Jeppsson (Vasteras, Sweden).
According to the abstract* released by the U.S. Patent & Trademark Office: "An arc quenching device for a three-phase electrical switchgear. The device includes a first busbar, a second busbar and a third busbar, each of a respective phase of the three-phase switchgear. The device also includes a first piston and a second piston, each of an electrically conductive material. The device also includes at least one pyrotechnical act...