ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,473,741, issued on Nov. 18, was assigned to BESTWAY INFLATABLES & MATERIAL CORP. (Shanghai).
"Pool cleaning device" was invented by Xianglin Zeng (Shanghai), Qingshui Song (Shanghai) and Wenhua Hu (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "A pool cleaning device is provided, including: a main body; a rotating unit rotatably disposed on the main body, the rotating unit including a rotating member, a fluid outlet extending radially outward from the rotating member, and a first positioning protrusion extending radially outward from the rotating member and spaced apart from the fluid outlet; and a reversing member including a plurality of stop...