Patent ID: 7125491

Claim:
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.