ALEXANDRIA, Va., May 5 -- United States Patent no. 12,620,535, issued on May 5, was assigned to Hitachi Energy Ltd (Zurich).
"Electrical switch for an on-load tap changer" was invented by Jean Louis Gerard Mathae (Ludvika, Sweden).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electrical switch for an on-load tap changer, said electrical switch comprising: at least three electrical contacts connected to a respective electrical conductor, a switch means configured to be movable between a plurality of positions, the switch means in each respective position physically contacting a respective combination of said electrical contacts to provide electrical contact between the electrical contacts in each respectiv...