US Patent 7240967 Modular furniture system

A modular furniture system is provided which allows an article of furniture to be “knocked down” into components and shipped. Upon reaching its destination, if desired, the article can be easily assembled without using tools. The components include a chassis, a back and end sections. The chassis includes upwardly extending blades which engage the back and end sections. The back and end sections include cams which are rotated to engage the chassis. When the cams are rotated to their locked positions, the blades are flexed away from the chassis to provide an interference fit between the chassis and the components.