Patent ID: 7735654

Claim:
A screening arrangement in a vibrating screen that screens a layer of stone or gravel material as the material travels in a direction of a longitudinal axis of the screening arrangement, the screening arrangement comprising: directing means provided on top of the screening arrangement that direct the material, all of the directing means being oriented to direct the material away from the longitudinal axis in a first region of the screening arrangement, and all of the directing means being oriented to direct material toward the longitudinal axis in a second region of the screening arrangement, wherein the directing means adjust the width of material in relation to the amount of material to achieve a continuous optimal layer of the material, by first directing the material laterally away from the longitudinal axis in the first region such that the layer of material becomes thinner, and then as the amount of material is reduced by traveling in the direction of the longitudinal axis and being screened, directing the material laterally towards the longitudinal axis in the second region such that the layer of material becomes thicker, wherein the screening arrangement includes a screening media in the form of a plurality of individual screening elements, the plurality of individual screening elements includes separate screening elements adjacent at least one screening element in both a longitudinal direction and a transverse direction, and wherein the directing means are formed as an integrated part of the screening elements, the directing means being raised portions on the surface of the screening elements and being arranged obliquely to the longitudinal axis.