ALEXANDRIA, Va., May 26 -- United States Patent no. 12,636,915, issued on May 26, was assigned to Qingdao Aufine Tyre Co. Ltd. (Qingdao City, China).
"Sidewall structure of tire" was invented by Zongtao Sun (Qingdao, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a sidewall structure of a tire, belonging to the technical field of sidewall structures. The sidewall structure of the tire includes a tire, a side surface of the tire is designed with multiple knurling lines which are formed on a sidewall of the tire by a knurling engraving process. The knurling lines are composed of sparse knurling lines and dense knurling lines which are alternately arranged on the sidewall of the tire. The knur...