ALEXANDRIA, Va., July 15 -- United States Patent no. 12,665,422, issued on June 23, was assigned to ABB Schweiz AG (Baden, Switzerland).
"Dual mode power transfer switches" was invented by Hany Habib (Glen Allen, Va.), Veerakumar Bose (Richmond, Va.) and Thomas Anthony Kendzia III (Richmond, Va.).
According to the abstract* released by the U.S. Patent & Trademark Office: "In one aspect, a transfer switch configured to operate in different transfer modes is provided. The transfer switch includes first and second inputs, first and second contactors, an output, first and second power stages, and a controller. The first and second inputs are configured to couple with first and second power sources, respectively. The first and second contactor...