Convertible seat-bed assembly

Claim 1

AN ARTICLE OF FURNITURE CONVERTIBLE FOR USE AS A BED OR CHAIR, SAID ARTICLE COMPRISING A MAIN FRAME HAVING A PAIR OF LATERALLY SPACED PARALLEL TUBULAR MEMBERS ADAPTED TO BE MOUNTED ON A SUITABLE SUPPORT, A SUPPLEMENTAL FRAME HAVING A PAIR OF LATERALLY SPACED TUBULAR RODS SLIDABLE TELESCOPICALLY IN SAID TUBULAR MEMBERS RESPECTIVELY, A CUSHION UNIT FIXED TO THE OUTER END OF SAID MAIN FRAME, A CUSHION UNIT HINGED AT ITS OUTER END TO THE OUTER END OF SAID SUPPLEMENTAL FRAME, A PAIR OF CUSHION UNITS DISPOSED BETWEEN SAID FIRST AND SECOND MENTIONED CUSHION UNITS A HINGE CONNECTING SAID PAIR OF CUSHION UNITS, A HINGE CONNECTION BETWEEN SAID FIXED CUSHION UNIT AND THE ADJACENT CUSHION UNIT OF SAID PAIR, A HINGE CONNECTION BETWEEN SAID SECOND CUSHION UNIT AND THE ADJACENT CUSHION UNIT OF SAID PAIR, SAID PAIR OF CUSHION UNITS BEING ADAPTED TO ASSUME AN INVERTED V FOR CHAIR USE WHEN THE SUPPLEMENTAL FRAME UNIT IS SLID TELESCOPICALLY INTO SAID MAIN FRAME, AND RELEASABLE MEANS FOR POSITIVELY RETAINING SAID SUPPLEMENTAL FRAME IN THE POSITION WHERE SAID PAIR OF CUSHIONS IS DISPOSED IN SUCH INVERTED V POSITION, SAID RELEASABLE MEANS COMPRISING PINS DEPENDING FROM THE SECOND MENTIONED CUSHION UNIT, AND HOLES IN THE TUBULAR MEMBERS AND TUBULAR RODS WHICH WHEN IN REGISTRY RECEIVE SAID PINS THEREBY TO RETAIN THE PARTS IN CHAIR POSITION.