ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,460,627, issued on Nov. 4, was assigned to Semes Co. Ltd. (Chungcheongnam-do, South Korea).
"Torsion pump and apparatus for supplying chemical liquid" was invented by Young Jun Son (Cheonan-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides a pump for supplying a liquid. The pump comprises: a tube member having a hose communicating with a chemical liquid inlet and a chemical liquid outlet, and a cylindrical drum provided to wind the hose, and configured to discharge a chemical liquid through a volume change caused by contraction of the hose wound around the drum; and a driver configured to provide a rotational f...