Patent ID: 6126821
Filing Date: 2000-10-03
Classification: E03F

Abstract:
A raked bar screen for a storm overflow, comprising a grid of parallel spaced-apart bars attached at their ends to a framework; a comb assembly having teeth adapted to engage in the spaces between the grid bars, the comb assembly being longitudinally reciprocable, whereby the comb teeth can sweep longitudinally back and forth between the grid bars from end to end; the grid bars being shaped to provide a straight central portion and longitudinal end portions which are upturned and angled in relation to the straight portion, whereby in use sweeping of the comb teeth between the grid bars at the angled end portions will drive out entrapped solid matter; the framework including a solid cap portion (14) joined to the ends of the bars (1) and extending transversely thereto, and having a flat underside; and the comb teeth each having leading (13) and trailing edges, a flat top edge (15) and a bottom edge, the comb teeth being positioned Such that, at their extremity of travel, the leading edges (13) protrude through the angled end portions of the bars, and the top edges contact and slide at least partly along the underside of the solid cap portion.