Patent ID: 8622454

Claim:
A mobile structure having sufficient internal structural rigidity to eliminate the need for load-bearing perimeter support structure, the mobile structure comprising: first and second rigid frames, each of the first and second rigid frames including: at least two mutually parallel vertical supports; and mutually parallel lateral roof and floor joist supports each extending perpendicularly between the at least two vertical supports; a carriage assembly, the carriage assembly supporting a floor diaphragm coupled thereto, the carriage assembly being rigidly coupled to the lateral floor joist supports of each of the first and second frames; at least two mutually parallel horizontal roof supports supporting a roof diaphragm, the horizontal roof supports being substantially perpendicular with, and rigidly coupled to, the lateral roof supports of the first and second rigid frames; a wheel-axle assembly coupled to the carriage assembly under the floor diaphragm; and at least one set of leveling assemblies configured to support said mobile structure when in a stationary mode, each of the at least one set of leveling assemblies configured to be in weight-bearing and in-line relationship with respect to one of the vertical supports of one of the first and second rigid frames, whereby whenever the leveling assemblies are extended to and rigidly coupled to the ground, substantially all lateral forces imposed on said mobile structure are transferred to the ground through the one of the first and second rigid frames.