ALEXANDRIA, Va., June 18 -- United States Patent no. 12,324,487, issued on June 10, was assigned to Jinjiang Xinming shoe material Technology Co. LTD. (Fujian, China).
"Rotatable anti-slip device and all-terrain anti-slip sole" was invented by Kunfeng Lin (Quanzhou, China) and Shubiao Lin (Quanzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present application relates to a rotatable anti-slip device and an all-terrain anti-slip sole, wherein the anti-slip mechanism can turn over relative to the mounting seat by providing a rotation part. Specifically, by providing a sphere, the rotating shaft can rotate along the spherical surface. At the same time, the rotating shaft is arranged between the s...