US Patent 10988152 Collapsible cart

A collapsible cart may include a handle, a first supporting frame, a second supporting frame, a pair of collapsible connecting members, each including a plurality of connecting units and connecting rods, and a pair of side connecting members, wherein the connecting units are linearly and pivotally connected to the first supporting frame and the second supporting frame, and the side connecting member is pivotally connected to the first and second supporting frames and the side connecting member, so when the movement of the side connecting member toward the center of the collapsible art triggers the collapse of the connecting member to minimize the size of the cart.