ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,456,589, issued on Oct. 28, was assigned to HITACHI ENERGY LTD (Zurich, Switzerland).
"Apparatus for operating an electric switching device" was invented by Chao Xu (Beijing), Hua Zhao (Beijing), Xiaoli Yang (Beijing) and Zhipeng Yuan (Beijing).
According to the abstract* released by the U.S. Patent & Trademark Office: "The apparatus includes a shaft rotatable to a plurality of predetermined positions to change a state of an electric switching device, a motor rotating the shaft via a transmission mechanism when the apparatus operates in an electric operating mode, and a braking mechanism configured to brake the motor in response to the shaft rotated to each position. The apparatus al...