Patent ID: 7472715

Claim:
A collapsible structure adapted to be supported on a surface and comprising: a pair of side panel frame members, each side panel frame member forming a continuous loop that has a folded and unfolded orientation, with each loop collapsible to the folded position by twisting and folding to form a plurality of concentric rings; a fabric material covering portions of each side panel loop frame member to form a side panel with each side panel frame member when the side panel frame members are in the unfolded orientation, the fabric material also extending from one of the side panel loop frame members to another of the side panel loop frame members; a further frame structure coupled to the pair of side panel frame members; a base coupled to each side panel; wherein when the pair of side panel frame members are in the unfolded orientation, each side panel is supported upright with a lower portion of the side panel oriented to rest on the surface and an upper portion of the side panel supported above the surface to define an interior space partially bordered by the side panel; wherein the pair of side panels are generally parallel to, and spaced apart from, each other; and wherein each side panel has a respective fabric sleeve permanently secured to the fabric material, with each side panel frame member located inside a respective fabric sleeve.