ALEXANDRIA, Va., April 15 -- United States Patent no. 12,599,239, issued on April 14, was assigned to GENG TONG Co. LTD. (Taichung City, Taiwan).
"Chair-back adjusting structure" was invented by Chi-Lun Tai (Taichung City, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A chair-back adjusting structure includes a first plate, a second plate, and a moving component. The first plate has a fixing plate perpendicularly installed thereon. The second plate has two fixing brackets installed thereon. Each fixing bracket defines a through hole. The moving component includes adjusting sleeves, adjusting shafts, and stop collars. The adjusting sleeves are symmetrically arranged on the second plate. Each adjusting...