ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,722,677, issued on Sept. 1, was assigned to Rui Cheng (Tianjin, China).
"Folding frame and wagon using the same" was invented by Rui Cheng (Tianjin, China) and Xuefeng Zheng (Hangzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The folding frame includes a first stand assembly arranged along a length direction, a second stand assembly arranged along a width direction, and a bottom frame assembly. The stand assemblies include cross-arranged telescopic rods and connecting members that enable folding and unfolding of the frame. The bottom frame assembly includes multiple connecting rods arranged in an X-shaped configuration to provide enhanced su...