US Patent 7390052 Light weight chassis and hull

A recreational vehicle includes a hull coupled to a chassis where the hull is formed by coupling pre-formed panels together using two piece channel members, and/or the chassis is formed by mechanically coupling pre-formed segments together. In some instances, the two piece channel members will interconnect substantially perpendicular panels such as by coupling wall panels to a floor panel, to a ceiling panel, and to adjacent wall panels. Such a vehicle can be quickly assembled from space efficient pre-formed pieces by lower skilled assemblers than are typically required in manufacturing a recreational vehicle.