ALEXANDRIA, Va., July 16 -- United States Patent no. 12,362,115, issued on July 15, was assigned to MEIDENSHA Corp. (Tokyo).
"Vacuum interrupter" was invented by Hideaki Fukuda (Numazu, Japan), Noboru Sakurai (Numazu, Japan) and Hiroki Narita (Numazu, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An arc shield with which a tubular body of a vacuum container is provided includes a tubular arc-shield body portion interposed between a fixed-side insulating portion and a movable-side insulating portion; a tubular arc shield fixed-side extension portion extending from the arc-shield body portion on the axially fixed side along the inner peripheral side of the fixed-side insulating portion; and a tubular ar...