ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,420,211, issued on Sept. 23.
"Roly-poly toy with adjustable center of gravity" was invented by Lin Dong (Qiyang, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A roly-poly toy with adjustable center of gravity, comprising a first and second base part arranged at an interval, a first winding mandrel mounted on the first base part, a second winding mandrel mounted on the second base part, a reel belt, and a drive assembly. The reel belt is annular and has a first end wound around the first winding mandrel and a second end wound around the second winding mandrel. The drive assembly can switch between a first driving state and a second driving state....