US Patent 6851457 Industrial multilayer fabric

An industrial multilayer fabric has at least an upper surface side layer and running surface side layer. The upper surface side layer and running surface side layer are connected by a ground yarn knotting yarn which forms a portion of the surface of the upper surface side layer. An upper surface side warp which appears on the surface of the upper surface side layer passes over two continuous upper surface side wefts and the ground yarn knotting yarn, and then passes under three continuous upper surface side wefts.