ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,486,888, issued on Dec. 2, was assigned to GUANGDONG YONGDING TECHNOLOGY Co. LTD. (Guangdong, China).
"Gearbox structure for driving" was invented by Zheng Li (Guangdong, China) and Jingke Wang (Guangdong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The gear box structure for driving includes a box body includes an upper housing and a lower housing, and an inner bottom surface of the lower housing is provided with a convex shaft, a first shaft hole penetrates vertically and is disposed at an axis of the convex shaft, and a second shaft hole is disposed in an upper end surface of the upper housing and the second shaft hole is coaxial with the fir...