ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,398,575, issued on Aug. 26, was assigned to Aftercloud Technology Co. Ltd (Fujian, China).
"Center pole fixing structure" was invented by Shunfeng Ding (Fujian, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a center pole fixing structure, including a center pole and a base. The base is provided with a center hole. The center pole is inserted into the center hole to be fixed. An anti-disengagement fixing structure is formed between the center pole and the base, achieves fixing by relative rotation of the center pole and the base, and constrains movement of the center pole in an axial direction thereof. A stopper for constraining the r...