Patent ID: 7552563

Claim:
A collapsible structure comprising: second wall and the fourth wall are on opposite sides of the first wall; wherein the second wall is adjacent a third wall and the first wall such that the third wall and the first wall are on opposite sides of the second wall; wherein the third wall is adjacent the fourth wall and the second wall such that the fourth wall and the second wall are on opposite sides of the third wall; wherein the fourth wall is adjacent the first wall and the third wall such that the first wall and the third wall are on opposite sides of the fourth wall; wherein the four walls are connectable such that the first wall and the third wall are generally opposite and the second wall and the fourth wall are generally opposing; wherein at least one of the four walls comprises at least three generally parallel hinges disposed between and spaced apart from the edges of the wall comprising the at least three hinges; and wherein the wall comprising the at least three generally parallel hinges is foldable at two of the hinges to form a pocket configured to receive at least part of another of the four walls; and wherein the side wall comprising the at least three hinges is foldable at the other of the three hinges for receipt of the other of the at least three hinges by a pocket on another wall.