A folding trailer has pivotally connected front, main and rear sections movable from an unfolded condition to a folded condition, in which the rear section pivots 270° to lie atop the main section, and the front section pivots 90° to nest within the main section. This provides a folded compact arrangement...http://www.google.sh/patents/US6846003?utm_source=gb-gplus-sharePatent US6846003 - Folding trailer