ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,498,047, issued on Dec. 16, was assigned to ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT Co. LTD. (Shaoxing, China).
"Driver and control valve" was invented by Zhongbo Feng (Shaoxing, China), Junjie Wang (Shaoxing, China), Fugang Wang (Shaoxing, China) and Haijian Sha (Shaoxing, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A driver and a control valve are provided. The control valve includes a valve body, a first valve core and a second valve core. The valve body provided with a valve cavity. A side wall of the valve body is provided with a plurality of communicating holes, and the communicating hole penetrates through the side wall of the valve body a...