ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,703,609, issued on Aug. 11, was assigned to Otis Elevator Co. (Farmington, Conn.).
"Automatic conveyor device" was invented by Xiren Hu (Hangzhou, China) and De Wu (Hangzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "An automatic conveyor device includes an entrance platform and an exit platform opposite to each other, and a series of steps running in a loop between the entrance platform and the exit platform; a platform footboard at the entrance platform or exit platform; a comb support plate connected to the platform footboard and slidable along guide rails of the platform footboard along a length direction; and one or more comb plates fixe...