Patent attributes
A chute system for conveying articles, preferably documents, from an upper to a lower elevation in a building. The system includes a vertical post, an outer wall that is concentric therewith, and a helical chute wound around the post. The chute is secured at an inner edge to the post and at an outer edge to the wall. The chute comprises a plurality of chute segments secured together in stepped relationship to each other. Each chute segment has a triangular upper wall disposed at a first angle to the post and sloping downwardly toward the outer wall. The upper wall is simultaneously disposed at a second angle to the horizontal and slopes generally downwardly toward a lower end of the post. Each chute segment further includes a first flange extending upwardly from the upper wall and a second flange extending downwardly from the upper wall. Adjacent chute segments are secured together by welding the second flange of a first chute segment to the first flange of a second chute segment.
