Mobile structure

DETAILED DESCRIPTION The present invention overcomes the abovenoted shortcomings of prior art systems and provides a simplified structure using beam members and flexible joints on supporting free wheeling castors.
The multiple beam assembly is comprised of flexible joints with overlapping beams joined through an intermediate block member by nut and bolt arrangement.
To provide requisite mobility this structure is carried by castors arranged to rotate freely about a first axis while being selectively positioned with respect to a second axis to vary the direction of its resistance.
This provides a towable structure whose supporting points articulate with uneven terrain.
Accordingly, it is the primary object of the subject invention to provide a flexible structure capable of following rough terrain and maintaining the supporting points in constant contact therewith.
It is a further object to provide a mobile structure which yields minimized rolling resistance during towing but may be set to yield maximized resistance in a transverse direction.
Other objects and advantages of the invention will become apparent upon reading the following detailed description and appended claims, and upon reference to the accompanying drawings.