US Patent Issued to Otis Elevator on July 29 for "Maintenance trajectory tracing for elevator system" (Chinese Inventors)

ALEXANDRIA, Va., July 30 -- United States Patent no. 12,371,303, issued on July 29, was assigned to Otis Elevator Co. (Farmington, Conn.).

"Maintenance trajectory tracing for elevator system" was invented by Wenbo Huang (Shanghai) and Ke Yang (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to the tracking of a maintenance trajectory in an elevator system. An apparatus provided by the present invention for tracking a maintenance trajectory in an elevator system is configured to generate, based on acquired relative height information of a maintenance worker entity in a lifting passage corresponding to the elevator system, maintenance trajectory information corresponding t...