ALEXANDRIA, Va., Oct. 6 -- United States Patent no. 12,751,896, issued on Oct. 6, was assigned to GUANGZHOU RISING DRAGON RECREATION INDUSTRIAL Co. LTD. (Guangzhou, China).
"Massage nozzle for hot tub" was invented by Huaibin Zhao (Guangzhou, China) and Xuewen Liu (Guangzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A massage nozzle includes a nozzle body Venturi core having two ends welded with an inner side wall of a water inlet end of a nozzle body, and an end of the nozzle body Venturi core away from a water spraying end is welded between a water inlet and an air inlet, and the side wall of the nozzle body Venturi core is provided with air inlet through holes. The welding of the two ends of t...