ALEXANDRIA, Va., June 18 -- United States Patent no. 12,326,012, issued on June 10, was assigned to YUNDA H&H TECH (Tianjin) Co. LTD. (Tianjin, China).
"Swimming pool cleaner" was invented by Enyu Wei (Tianjin, China), Hao Xu (Tianjin, China), Huixin Zhang (Tianjin, China), Yu Peng (Tianjin, China), Yinping Yuan (Tianjin, China) and Xu Yang (Tianjin, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A swimming pool cleaner is provided, which includes a housing, a travelling device and a filter screen, two groups of power components with opposite driving directions are provided inside the water outlet chamber, the power component includes an impeller and a water outlet channel, wherein the water outlet cha...