ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,770,804, issued on Oct. 20, was assigned to WEST JOURNEY Corp. (Xi'an, China).
"On-load tap-changer" was invented by Xiaoping Li (Xi'an, China) and Yun Wang (Xi'an, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "An on-load tap-changer includes: a tap-changer body and a driving mechanism fixed on the tap-changer body. The tap-changer body includes a housing, multiple insulation fixing plates, multiple turntables, each of which includes a sheave and a cam plate, the cam plate of which is rotatably connected to the insulation fixing plate, and the sheave of which is connected to the driving mechanism, multiple vacuum tubes fixed on the multiple insul...