ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,421,078, issued on Sept. 23, was assigned to Otis Elevator Co. (Farmington, Conn.).

"Elevator control system with reliability monitoring" was invented by Zhenhong Li (New Britain, Conn.) and Ben Guo (West Hartford, Conn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An illustrative example embodiment of an elevator control system includes a drive configured to control power provided to an elevator machine, a machine power switch module configured to selectively disconnect power from the elevator machine, and a brake power switch module configured to selectively disconnect power from a brake associated with the elevator machine. A monitor module includ...