ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,539,934, issued on Feb. 3, was assigned to DONGGUAN KAISHENG BICYCLE Co. LTD (Dongguan, China).
"Folding joint" was invented by Xun Wen (Dongguan, China), Bing Yan (Dongguan, China) and Heping Jiang (Dongguan, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A folding joint, comprising a first joint, a second joint, a handle, a locking rod, a swing back element, a connecting rod, a sliding rod and a reset elastic member, one side of the first joint (10) is hingedly connected to one side of the second joint, and the handle is hingedly connected to other side of the first joint, the other side is provided with a supporting part, and is provided with a ...