Patent ID: 8365911

Claim:
An assembly comprising: a roller box comprising: a box portion having a bottom portion, a plurality of sidewalls, and a top portion, wherein the bottom portion meets a first of the sidewalls to define a corner edge of the box portion, and wherein the box portion has a height and a width; a first wheel disposed along the corner edge at a first location; and a second wheel disposed along the corner edge at a second location, wherein the first wheel and the second wheel have a common and fixed axis of rotation, wherein the top portion has an upper surface, and the bottom portion has a bottom surface, and wherein the common and fixed axis of rotation of the first wheel and the second wheel extends parallel to the upper surface and to the bottom surface and between the upper surface and the bottom surface; and a mattress contained in the box portion, wherein the mattress is rolled into a cylindrical shape with a diameter substantially equal to the width of the box portion and a length substantially equal to the height of the box portion.