Foldable frame vehicle

Claim 1

A FOLDABLE VEHICLE COMPRISING A WHEEL-MOUNTED BASE SECTION; A HANDLE SECTION; A PLURALITY OF INTERMEDIATE, SUBSTANTIALLY RIGID, RELATIVELY ADJOINING FRAME-FORMING SECTIONS FOLDABLY CONNECTED BETWEEN SAID BASE AND HANDLE SECTIONS, EACH OF SAID SECTIONS INCLUDING A PAIR OF RELATIVELY SPACED APART, LONGITUDINALLY EXTENDING SIDE RAILS AND AT LEAST ONE RIGID CROSS TIE EXTENDING TRANSVERSELY BETWEEN SAID SIDE RAILS; MEANS ROTATIVELY CONNECTING THE SIDE RAILS OF SAID OF SAID SECTIONS TO THE CROSS TIES THEREOF AND PROVIDING FOR AXIAL TURNING MOVEMENT ONLY OF SAID SIDE RAILS WITH RESPECT TO SAID CROSS TIES; AND HINGE MEANS CONNECTING THE SIDE RAILS OF EACH OF SAID SECTIONS TO THE SIDE RAILS OF ANOTHER OF SAID SECTIONS, SAID HINGE MEANS INCLUDING LINEAL HINGE AXES DISPOSED IN PERPENDICULAR RELATION TO THE LONGITUDINAL AXIS OF SAID SIDE RAILS AND SAID HINGE MEANS BEING TURNABLE BODILY WITH SAID SIDE RAILS BETWEEN A FIRST POSITION IN WHICH THEIR HINGE AXES ARE DISPOSED IN PARALLEL RELATION TO THE LONGITUDINAL AXES OF SAID CROSS TIES TO PERMIT SAID SECTIONS TO BE FOLDED WITH RESPECT TO ONE ANOTHER AND A SECOND POSITION IN WHICH THEIR HINGE AXES ARE DISPOSED IN PERPENDICULAR RELATION TO THE LONGITUDINAL AXES OF SAID CROSS TIES TO THEREBY LOCK SAID SECTIONS AGAINST RELATIVE FOLDING MOVEMENT.