ALEXANDRIA, Va., March 12 -- United States Patent no. 12,246,944, issued on March 11, was assigned to Otis Elevator Co. (Farmington, Conn.).
"Elevator traction machine installation apparatus and elevator traction machine installation method" was invented by Wenxiang Liu (Hangzhou, China), Ming Chen (Hangzhou, China), Chenfeng Shi (Hangzhou, China) and Jianfeng Wu (Hangzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "An elevator traction machine installation apparatus includes a lifting mechanism having a base portion and a load-bearing portion adapted to place an elevator traction machine, the base and load-bearing portions are connected and can rise and lower relative to each other in a longitudin...