Sectional fabric floor covering

Claim 1

A FLOOR COVERING EXTENDING SUBSTANTIALLY THROUGHOUT A ROOM COMPRISING A PLURALITY OF ABUTTING FLOOR COVERING ELEMENTS OF RECTANGULAR DESIGN SUCH THAT THE EDGE OF ONE ELEMENT ABUTS AN EDGE OF AN ADJACENT ELEMENT TO PRESENT A SUBSTANTIALLY CONTINUOUS SURFACE, EACH OF SAID ELEMENTS INCLUDING A FLOOR COVERING FABRIC, A PAD BENEATH SAID FLOOR COVERING FABRIC AND A BACKING BOARD BENEATH SAID PAD, SAID PAD AND SAID BACKING BOARD BEING OF SUBSTANTIALLY THE SAME GEOMETRIC CONFIGURATION AS SAID FLOOR COVERING FABRIC, AND POCKETS AT THE CORNERS OF SAID FLOOR COVERING FABRIC, SAID POCKETS BEING SECURED TO THE UNDERSIDE OF SAID FLOOR COVERING FABRIC, SAID POCKETS RECEIVING THE CORNERS OF SAID PAD AND SAID BACKING BOARD WHEREBY SAID FLOOR COVERING FABRIC IS RETAINED IN A FLAT STRETCHED CONDITION WHEN SAID BACKING BOARD IS FLAT, SAID BACKING BOARD BEING RIGID RESILIENT AND SUFFICENTLY FLEXIBLE THAT THE CORNERS THEREOF MAY BE REMOVED FROM SAID FABRIC POCKETS UPON FLEXION OF SAID BACKING BOARD, THE CORNERS OF SAID BACKING BOARD BEING REDUCED TO BE RECEIVED IN SAID POCKETS.