Patent ID: 7815053

Claim:
A woven wire screening for use in classifying material flowing through said woven wire screening; said woven wire screening comprising: (a) a plurality of warp wires, each of said plurality of warp wires having two substantially flat sidewall portions; (b) a plurality of weft wires, each of said plurality of weft wires having two substantially flat sidewall portions, said plurality of warp and said plurality of weft wires being interwoven to form an integral wire cloth having a plurality of openings for permitting material to be classified to flow through said openings; (c) said plurality of warp wires being crimped to form upper and lower knuckles, said plurality of weft wires being crimped to form upper and lower knuckles, said plurality of weft wires being crimped deeper than said plurality of warp wires such that said upper knuckles of said weft wires are higher than said upper knuckles of said warp wires creating a knuckle height differential between said upper knuckles of said weft wires and said upper knuckles of said warp wires; and, (d) said woven wire cloth being formed such that a ratio of said knuckle height differential and width of at least one of said plurality of openings ranges from 5% to 35%.