US Patent Issued to Otis Elevator on July 14 for "Method and apparatus for detecting elevator safety chain" (Chinese Inventors)

ALEXANDRIA, Va., July 14 -- United States Patent no. 12,679,698, issued on July 14, was assigned to Otis Elevator Co. (Farmington, Conn.).

"Method and apparatus for detecting elevator safety chain" was invented by Fu Qi (Shanghai), Bichun Li (Shanghai) and Shenhong Wang (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method and device for detecting an elevator safety chain and a computer-readable storage medium for implementing the method. A device for detecting an elevator safety chain, includes: an interface unit coupled with the elevator safety chain and configured to output an operating signal having a first level when the elevator safety chain is in an ON state and an operating signal having ...