US Patent Issued to Otis Elevator on June 16 for "Automatic conveying device and maintenance method therefor" (Chinese Inventors)

ALEXANDRIA, Va., June 16 -- United States Patent no. 12,654,995, issued on June 16, was assigned to Otis Elevator Co. (Farmington, Conn.).

"Automatic conveying device and maintenance method therefor" was invented by Xinwei Gong (Haining, China), Lifei Cheng (Hangzhou, China) and Zhaoxia Hu (Hangzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "An automatic conveying device and a maintenance method therefor. The automatic conveying device includes a fixed step drive wheel, and a step driven wheel located on a movable bracket; a step chain in transmission connection with the step drive wheel and the step driven wheel; a tensioning device that acts on the movable bracket to maintain the step chain in t...