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US 2015/0021240 A1Published application
Woven wire screening and a method of forming the same
AssigneeLumsden Corporation
InventorsMyron Henry Wardell, Arthur Lumsden, Jeffery L. Beck, Boyd E. Knepp
Life of this patent
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Abstract
A woven wire screening for use in classifying material flowing therethrough and a method of forming the same. The woven wire screening includes a plurality of warp wires and a plurality of weft wires. The plurality of warp wires and the plurality of weft wires are interwoven to form an integral wire cloth having a plurality of openings for permitting material to be classified to flow through the openings. The integral wire cloth includes an upper screening surface configured to enhance the tumbling action of product impacting the upper screening surface to improve throughput of the woven wire screening.
Claims26
A woven wire screening for use in classifying material flowing through said woven wire screening;
- said woven wire screening comprising:
- (a) a plurality of weft wires;
- (b) a plurality of warp wires, said plurality of warp wires including a plurality of first warp wires and at least one second warp wire, said plurality of warp wires 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) each of said plurality of first 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 having a first crimp depth and said plurality of first warp wires having a second crimp depth different from the first crimp depth such that said upper knuckles of said weft wires are offset vertically from 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 first warp wires;
- (d) said at least one second warp wire is one of a straight wire and a crimped wire having a crimp depth different from said second crimp depth;
- and,
- (e) said plurality of warps wires and said plurality of weft wires being arranged relative to each other such that substantially all of the openings of the integral wire cloth have substantially the same size.
4 more elements
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;
- (b) a plurality of weft wires, said plurality of warp wires 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 including a plurality of crimped warp wires being crimped to form upper and lower knuckles, said plurality of weft wires including a plurality of crimped weft wires being crimped to form upper and lower knuckles, said plurality of weft wires having a first crimp depth and said plurality of first warp wires having a second crimp depth different from the first crimp depth such that said upper knuckles of said weft wires are offset vertically from 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 first warp wires;
- and, (d) said plurality of weft wires includes at least one of a straight weft wire and a crimped wire having a crimp depth different from the first crimp depth.
2 more elements
A method of forming an integral wire cloth used in classifying material flowing through the integral wire cloth;
- said method including the steps of:
- (a) providing a plurality of crimped warp wires having upper and lower knuckles;
- (b) providing a plurality of crimped weft wires having upper and lower knuckles, the plurality of crimped weft wires are crimped differently than the plurality of crimped warp wires creating a first knuckle height differential between the upper knuckles of the crimped weft wires and the upper knuckles of the crimped warp wires;
- (c) providing at least one additional wire, the at least one additional wire is one of a straight wire and a crimped wire having a crimp depth different from the crimp depth of one of the following:
- (i) the plurality of crimped warp wires;
- and, (ii) the plurality of crimped weft wires;
- (d) interweaving the plurality of crimped warp wires, the plurality of crimped weft wires and the at least one additional wire such that the at least one additional wire changes the first knuckle height differential between an upper knuckle of at least one crimped warp wire and an upper knuckle of at least one crimped weft wire;
- and
- (e) forming an integral wire cloth such that substantially all openings in the integral wire cloth have substantially the same size.
6 more elements
A woven wire screening for use in classifying material flowing through said woven wire screening;
- said woven wire screening comprising:
- (a) a plurality of weft wires;
- (b) a plurality of warp wires;
- (c) each of 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;
- and,
- (d) at least first and second straight wires, said first straight wire having a cross-sectional height greater than said second straight wire and extending substantially parallel to said second straight wire, said plurality of warp wires, said plurality of weft wires and said first and second straight 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.
3 more elements
A woven wire screening for use in classifying material flowing through said woven wire screening;
- said woven wire screening comprising:
- (a) a plurality of weft wires;
- (b) a plurality of warp wires, said plurality of warp wires 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;
- and,
- (c) a first wire, said first wire being either a warp wire or a weft wire, said first wire having a first set of knuckles, said first set of knuckles being one of a plurality of upper knuckles and a plurality of lower knuckles, at least one of said first set of knuckles being offset vertically from at least one other of said first set of knuckles.
2 more elements
Dependencies are inferred from the claim text.