Patent ID: 9707565
Date: 2017-07-18
CPC Classifications: B02C

Claim:
1. A screen for a shredding machine having a rotor, comprising: a pair of mounting plates; a plurality of arcuate ribs attached substantially perpendicular to and extending between said mounting plates; and an arcuate grid comprising a plurality of structural elements surrounding a plurality of apertures, wherein said arcuate grid is attached to said plurality of arcuate ribs, wherein a first set of said plurality of structural elements extend laterally between said plurality of arcuate ribs and wherein a second set of said plurality of structural elements extend longitudinally between said laterally extending structural elements, wherein said longitudinally extending structural elements are connected to said laterally extending structural elements in a flush relationship at a plurality of intersections between said longitudinally extending structural elements and said laterally extending structural elements, wherein said plurality of structural elements have a first surface facing the rotor and a second surface facing toward said plurality of arcuate ribs, and wherein said first surface has a rounded cross-sectional shape proximate to said plurality of apertures.