ALEXANDRIA, Va., March 26 -- United States Patent no. 12,259,201, issued on March 25, was assigned to T.RAD Co. Ltd. (Tokyo).
"Header plates structure of heat exchanger" was invented by Akira Komuro (Tokyo), Taiji Sakai (Tokyo), Atsushi Okubo (Tokyo) and Hiro Kubota (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "In a header plate structure of heat exchangers having a core divided in plurality, a flat tube is inserted into each of the tube insertion holes having a burring, which is formed in a header plate; the flat tube is joined at an inner surface in the vicinity of a top portion of the burring; a burring with height H1 is formed to a long side portion of a dummy tube insertion hole; and a burring w...