US Patent Issued to Otis Elevator on Nov. 25 for "Elevator car door locking device and elevator equipment" (Chinese Inventors)

ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,479,701, issued on Nov. 25, was assigned to Otis Elevator Co. (Farmington, Conn.).

"Elevator car door locking device and elevator equipment" was invented by Chong Chen (Hangzhou, China), Haiping Pan (Hangzhou, China), Xiu Jian (Hangzhou, China), Haiyun Qian (Hangzhou, China), Qiguo Li (Hangzhou, China), Zhijia Zheng (Hangzhou, China) and Yi Shi (Hangzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "An elevator car door locking device and elevator equipment. The car door locking device includes a vane base provided with a first and a second rotation center; a vane assembly provided with a clamping vane or an expanding vane; and a vane drive asse...