US Patent Issued to ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT on Nov. 3 for "Stop valve, machining method and assembly method" (Chinese Inventors)

ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,781,867, issued on Nov. 3, was assigned to ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT Co. LTD. (Shaoxing, China).

"Stop valve, machining method and assembly method" was invented by Diyong Chen (Shaoxing, China), Jie Shou (Shaoxing, China), Guanghua Feng (Shaoxing, China), Weineng Chen (Shaoxing, China), Bin Luo (Shaoxing, China), Feng Lou (Shaoxing, China) and Xingyang Yuan (Shaoxing, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A stop valve, including: a valve tube, wherein two ends thereof are respectively an operating end and a plugging end, a side wall of the valve tube is provided with a first interface and a second interface, the second interfac...