US Patent Issued to GuangDong Well Technology on Aug. 26 for "Device structure for automatically opening and closing wastewater tank valve of cleaning machine" (Chinese Inventor)

ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,396,603, issued on Aug. 26, was assigned to GuangDong Well Technology Co. Ltd (Huizhou, China).

"Device structure for automatically opening and closing wastewater tank valve of cleaning machine" was invented by Jianqiang Ning (Guangdong, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a device structure for automatically opening and closing a wastewater tank valve of a cleaning machine, including a cleaning machine body which is provided with a water-air separation chamber at a top and is detachably mounted with a wastewater tank at a bottom, the water-air separation chamber is provided with one end connected to a water drawing pipe an...