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US 7,125,491 B2Granted
Screen and process for manufacturing a screen of this kind
AssigneeAndritz Inc.
InventorsHelmuth Gabl, Axel Pichler
Life of this patent
Estimating the term…
Abstract
A flat or cylindrical screen includes rods and rod-bearing supporting elements. The rods have protrusions in the side walls which are received into inversely shaped recesses in a supporting element. The screen is manufactured by bending the supporting elements open elastically and inserting the rods, whereupon the supporting elements spring back, encircle the rods positively and form a screen mat.
Claims10
A screen comprising
- a plurality of rods, each of the rods having an embedded end and first and second side walls, said first side wall defining at least one protrusion and said second side wall defining at least two protrusions, each protrusion having an elliptic shape or a circular shape having a radius r of 0.1 mm<r<2 mm, all portions of each protrusion being positioned at a distance from the embedded end of the rod;
- and
- at least one rod-bearing supporting element having a plurality of receptacles, each of the receptacles having an inner surface defining recesses having a shape which is complementary to the protrusions of the rod;
- wherein a portion of each rod is received within a receptacle and each protrusion of the rod is received within a recess of the supporting element whereby the rods and the at least one rod-bearing supporting element form a substantially planar screen mat.
1 more element
A cylindrical screen basket comprising:
- at least one rod-bearing supporting element having a plurality of receptacles, each of the receptacles having an inner surface defining a plurality of recesses, the at least one rod-bearing supporting element being rolled to define a substantially circular shape such that said receptacles face an interior of said circular shape;
- and
- a plurality of rods, each of the rods having an embedded end and first and second side walls, said first side wall defining at least one protrusion and said second side wall defining at least two protrusions, each protrusion having an elliptic shape or a circular shape having a radius r of 0.1 mm<r<2 mm, all portions of each protrusion being positioned at a distance from the embedded end of the rod;
- wherein a portion of each rod is received within a receptacle and each protrusion of the rod is received within a recess of the supporting element whereby the rods and the at least one rod-bearing supporting element form a substantially cylindrical screen basket.
1 more element
Dependencies are inferred from the claim text.