ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,456,591, issued on Oct. 28, was assigned to HITACHI ENERGY LTD (Zurich, Switzerland).
"Driving system for an on-load tap changer" was invented by Borislav Vasilev (Sofia, Bulgaria), Georgi Manev (Sofia, Bulgaria), Veselin Nikolov (Sofia, Bulgaria) and Angel Mihaylov (Plovdiv, Bulgaria).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to a driving system for an on-load tap changer, comprising a vacuum interrupter driving mechanism configured to drive a vacuum interrupter of the on-load tap changer, an energy accumulation mechanism mechanically coupled with the vacuum interrupter driving mechanism, and a flywheel mechanism mech...