ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,557,921, issued on Feb. 24, was assigned to XIAMEN HONOR INDUSTRY AND TRADING Co. LTD. (Xiamen, China).
"Folding frame" was invented by Jian Yong Zhang (Xiamen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A folding frame is provided, including a retractable folding component and a fence. The fence includes folding guardrails and upright rods, and the fence is provided with a bending piece. The present invention reduces the number of linkage rods through optimization, thus reducing the weight of children's bed. In addition, the cooperation of the unlocking component of the base and the annular limiting base facilitates folding, thereby realizing...