ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,390,972, issued on Aug. 19, was assigned to Jiangsu Risingsun Tyre Co. Ltd. (Yitang Town Xuzhou, China).
"Non-inflatable hollow tire mould" was invented by Mingjiang Wang (Xuzhou, China), Li Liu (Xuzhou, China), Shipeng Wen (Xuzhou, China) and Feng Wang (Xuzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "An inflation-free hollow tire modeling die comprises a die base, at least one die core, and a core holder. A front face of the die base has a concave feeding cavity, and a bottom of the feeding cavity has a modeling cavity running through a back face of the die base. The core holder has an arched or triangular support. Feet of the support are ...