WAVY MOLDED PLASTIC JIGGING SIEVE Russian patent published in 2009 - IPC B07B1/46 

FIELD: mechanics, mining.

SUBSTANCE: wavy molded plastic jigging screen comprises multiplicity of spaced apart parallel-elongated wavy sections with inner and outer surfaces. The said wavy sections represent the first wavy sections separated from each other by at least one-second wavy section. The sieve comprises multiplicity of the first rectangular-section ribs passing lengthwise inside the first wavy sections and multiplicity of the second ribs passing crosswise through the first and second wavy sections and molded one-piece with them. The outer surfaces of the first wavy sections feature, all over their length, the first faces of the first inner ribs molded one-piece with the second ribs and pressed therein, while the inner surfaces of the second wavy sections feature, all over their length, the second and third inner ribs.

EFFECT: higher rigidity and stability.

21 cl, 11 dwg