ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,718,997, issued on Aug. 25, was assigned to MITSUBISHI ELECTRIC Corp. (Tokyo).
"Vacuum circuit breaker" was invented by Motohiro Sato (Tokyo) and Yasunori Nakamura (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A vacuum circuit breaker includes: a vacuum valve accommodated in a tank having a cylindrical shape; a movable-side shield installed on a movable side of the vacuum valve; a movable-side main contact point having a tubular shape to cover the vacuum valve and the movable-side shield from radially outside; a contact point driver that moves the movable-side vacuum contact point and the movable-side main contact point in conjunction with each ...