Triple layer non-plugging screen

Abstract

A triple layer non-plugging screen for use with a vibrating screening machine to filter particles from a liquid has an upper filtering layer made of warp and shute wires that intersect to form an array of small openings, a lower strengthening layer having an array of large openings, and an anti-plugging layer. The anti-plugging layer is sandwiched between the upper filtering and lower strengthening layers and is made of warp and shute wires that intersect to form an array of openings. The upper filtering and anti-plugging layers are oriented within the screen so that at least one of the warp and shute wires of the anti-plugging layer obstructs at least some of the openings in the upper filtering layer. This reduces the likelihood of entrapment of undesirable particles in the obstructed openings of the upper filtering layer.

Dependencies are inferred from the claim text.