Sofa-bed and folding bed-frame therefor

Claim 1

A FOLDING BED STRUCTURE FOR MOUNTING IN A BOX-LIKE FRAME STRUCTURE OF SOFA BEDS AND THE LIKE HAVING A FIXED FRONT BOARD MEMBER, COMPRISING: (A) A FOLDABLE BED FRAME INCLUDING HEAD, BODY, INTERMEDIATE AND FOOT FRAME SECTIONS PIVOTALLY INTERCONNECTED FOR SELECTIVE MOVEMENTS TO AN EXTENDED POSITION TO FORM A BED PROJECTING BEYOND AND ABOVE THE FRONT BOARD MEMBER OF THE FRAME STRUCTURE, AND TO A FOLDED POSITION WITH THE INTERMEDIATE SECTION SUBSTANTIALLY UPRIGHT IN REARWARDLY SPACED RELATION TO THE FRONT BOARD, AND WITH THE FOOT SECTION UPPERMOST AND EXTENDING REARWARDLY TO FORM A SOFA SEAT; (B) FLEXIBLE FABRIC SUPPORTING MEANS CARRIED BY AND LONGITUDINALLY TENSIONED OVER SAID FRAME SECTIONS WHEN IN THE EXTENDED POSITION, SAID SUPPORTING MEANS INCLUDING A FIRST FABRIC SECTION IN THE FOOT FRAME SECTION AND A SECOND FABRIC SECTION IN THE OTHER FRAME SECTION IN END-TO-END RELATION, THE ADJACENT END OF THE FIRST SECTION BEING PROVIDED WITH CONNECTED DOUBLE EDGE FORMING MARGINAL PORTIONS; (C) MEANS CONNECTING ONE OF SAID EDGE MARGINAL PORTIONS WITH THE ADJACENT END OF SAID SECOND FABRIC SECTION; AND (D) A TRANSVERSELY EXTENDING FRAME PART CARRIED BY SAID INTERMEDIATE FRAME SECTION ADAPTED TO LIE IN CLOSE PROXIMITY TO SAID FRONT BOARD IN SAID FOLDED POSITION OF THE BED FRAME, SAID PART BEING CONNECTED WITH THE OTHER OF SAID EDGE MARGINAL PORTIONS, WHEREBY SAID OTHER MARGINAL PORTION COACTS IN THE FOLDED POSITION OF THE BEAD FRAME TO BRIDGE THE SPACE ADJACENT THE FRONT BOARD AND INDEPENDENTLY TENSION THE FIRST SECTION FABRIC.