Platform structure for upholstered article and method of manufacture

Claim 1

IN AN UPHOLSTERED ARTICLE HAVING AN UNDERLYING SPRING STRUCTURE WHICH IS RESILIENTLY DISTORTABLE UNDER FORCE OF A GENERAL MAGNITUDE IMPOSED BY THE WEIGHT OF A PERSON RESTING THEREON, AN OVERLYING LAYER OF RELATIVELY SOFT PADDING MATERIAL, AND AN INTERPOSED PLATFORM TO SUPPORT SAID PADDING MATERIAL AND TO PROTECT SAID PADDING MATERIAL FROM DAMAGE BY SAID SPRING STRUCTURE, AN IMPROVED PLOTFORM COMPRISING, AN EXPANDED OPEN MESH SHEET OF RESILIENTLY DISTORABLE PLASTIC MATERIAL SUCH AS ORIENTED AND STABILIZED POLYETHYLENE, THE ELEMENTS DEFINING THE OPENINGS IN SAID SHEET EXTENDING ALTERNATELY TOWARD OPPOSITE FACES OF THE SHEET AND HAVING ALTERNATELY OPPOSITE SIDE PORTIONS CONNECTED TO ADJACENT ELEMENTS, SAID ELEMENTS BEING ERSILIENTLY DISTORTABLE BOTH IN THE GENERALLY DIRECTION OF EXTENT OF SAID SHEET AND LATERALLY THEREOF AND BEING RESILIENTLY TWISTABLE IN TORSION RESPONSIVE TO TENSION ON SAID SHEET IMPOSED BY FORCE OF SAID GENERAL MAGNITUDE, SO THAT SHEET CAN FLEX BODILY AND EXTEND RESILIENTLY IN ITS OWN GENERAL DIRECTION OF EXTENT, SAID OPENINGS BEING SMALL WITH RELATION TO THE DISTANCE BETWEEN THE ELEMENTS OF SAID SPRING STRUCTURE.