ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,747,138, issued on Sept. 29, was assigned to Otis Elevator Co. (Farmington, Conn.).

"Brake system for a conveyor system, method for detecting a brake of a conveyor system, and controller" was invented by Xinwei Gong (Haining, China), Lifei Cheng (Hangzhou, China), Kaisheng Xu (Haining, China) and Zhaoxia Hu (Hangzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A brake system for a conveyor system. The brake system includes a brake, a distance detection device and a controller. The brake includes a brake arm and a brake lining connected to the brake arm. The distance detection device is arranged on the brake for detecting a first distance and ...