Flexible bed wheeled vehicle

Claim 1

A FLEXIBLE BED WHEELED VEHICLE COMPRISING IN COMBINATION: (1) A ONE PIECE BED MADE FROM SUBSTANTIALLY UNIFORM THICKNESS SHEET MATERIAL CONVOLUTED TO FORM AS VIEWED IN CROSS SECTION A PLURALITY OF ADJACENT RIBS COMPRISING ALTERNATING CRESTS AND TROUGHS, THE VERTICAL DISTANCE BETWEEN THE TOP OF A CREST AND THE BOTTOM OF A TROUGH BEING MANY TIMES GREATER THAN THE SHEET MATERIAL THICKNESS TO THEREBY FORM A BED WHICH IS SUBSTANTIALLY INFLEXIBLE ABOUT AXES ORTHOGONAL TO SAID RIBS AND FLEXIBLE WITHIN LIMITS ABOUT AXES PARALLEL TO SAID RIBS, (2) A SUPPORT STRUCTURE INCLUDING ONLY A SINGLE PAIR OF SPACED APART ELONGATED RIGID SUPPORT BEAMS EXTENDING TRANSVERSELY TO SAID CRESTS AND TROUGHS OF SAID RIBS IN UNDERLYING RELATION TO SAID BED WITH SUBSTANTIALLY ALL OF SAID TROUGHS SEATED UPON AND SUPPORTED BY SAID BEAMS, SAID SINGLE PAIR OF BEAMS BEING DISPOSED RESPECTIVELY PROXIMATE TO THE FRONT AND REAR ENDS OF SAID BED AND BEING COUPLED TO ONE ANOTHER ONLY THROUGH THE BED ITSELF SO THAT A LINE JOINING ONE END OF ONE OF SAID BEAMS TO THE REMOTE END OF THE OTHER OF SAID BEAMS EXTENDS DIAGONALLY TO THE LONGITUDINAL EXTENT OF SAID BED RIBS, WHEREBY SAID BED MAY FLEX ABOUT SUCH DIAGONAL WITHIN LIMITS, (3) MEANS SECURING SAID BED TO SAID SUPPORT STRUCTURE, AND (4) A PLURALITY OF WHEELS CARRIED BY SAID VEHICLE IN UNDERLYING RELATION TO SAID BED OPERATIVE TO SUPPORT THE LATTER FROM AN UNDERLYING SURFACE.