ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,465,872, issued on Nov. 11.
"Multi-stage synchronous driving mechanism and electric toy" was invented by Shaoqing Lin (Shantou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A multi-stage synchronous driving mechanism and an electric toy are provided. The electric toy includes a multi-stage synchronous driving mechanism. In terms of the multi-stage synchronous driving mechanism, on one hand, by means of engagement between a sun gear and a planetary gear, all execution units are ensured to rotate synchronously based on a preset proportion, thereby greatly improving consistency and accuracy of motion among execution units. Further, torque of a moto...