US Patent 7033661 Covering for floors and/or walls

A fabric is provided having discrete surface portions of a primary backing and tufted yarns exposed on the technical face of the fabric. To form the fabric, the yarn feed controlled by servomotors is adjusted in increments to rob back yarn sufficient to pull out the previously tufted loops in selected portions of the fabric, leaving the primary backing portion of the pulled-out loops exposed on the technical face. By the selection process, random or patterned tufted portions and exposed primary backing surface portions are provided on the technical face of the fabric.