ALEXANDRIA, Va., March 3 -- United States Patent no. 12,565,250, issued on March 3.
"Locking device for folding cart" was invented by Wanjuan Zhu (Puning, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The provided is a locking device for a folding cart, including a button mechanism and a locking member, where the button mechanism includes a movable portion and multiple fixing hooks; the movable portion is slidably disposed on a first panel body of the folding cart; the locking member is connected to a second panel body of the folding cart; the first panel body is hinged to the second panel body; and the movable portion is able to switch between an initial state and a pushed state. When the movable por...