Patent ID: 6237780
Filing Date: 2001-05-29
Classification: B01D,B07B,E21B

Abstract:
A plurality of at least two screens, one on top of the other, said plurality comprising at least a first screen and a second screen,the first screen comprising a plurality of first warp wires and a plurality of first shute wires, the first warp wires interwoven with the first shute wires, and a plurality of spaced-apart first support wires interwoven with the first shute wires, the first support wires having a diameter greater than a diameter of the first warp wires,the second screen comprising a plurality of second warp wires and a plurality of second shute wires, the second warp wires interwoven with the second shute wires, and a plurality of second spaced-apart support wires interwoven with the second shute wires, the second support wires having a diameter greater than a diameter of the second warp wires, andthe first support wires having a diameter less than the diameter of the second support wires.