Method and apparatus for sorting recycled material

  • US 6,149,018 A
  • Filed: 05/03/1999
  • Issued: 11/21/2000
  • Est. Priority Date: 12/18/1996
  • Status: Expired due to Term
First Claim
Patent Images

1. A material separation screen, comprising:

  • a frame;

    a first shaft and a second shaft mounted adjacent to and substantially parallel with one another on the frame;

    a first compound disc mounted on the first shaft and a second compound disc mounted on the second shaft, each compound disc having a primary disc with a first outside perimeter, and a secondary disc abutted against a lateral side of the primary disc having a second outside perimeter smaller than the first outside perimeter;

    wherein the first and second compound discs are spaced apart from adjacent compound discs on their respective shafts; and

    wherein the first compound disc on the first shaft is aligned with the second compound disc on the second shaft such that they overlap to form a stair-shaped gap between them.

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