Patent ID: 6021905
Filing Date: 2000-02-08
Classification: D21D,Y10T

Abstract:
A method of manufacturing a screen cylinder, comprising the steps of:(a) constructing a metal cylinder having an outer surface, an inner surface, a central axis, and an effective axial length, one of said inner and outer surfaces comprising an outlet side of said cylinder, and the other of said inner and outer surfaces comprising an inlet side of said cylinder, by: (a1) forming in the outlet side surface a plurality of grooves substantially parallel to the central axis; and (a2) forming a slot in at least some of the grooves, each slot defining a through-extending flow path of a predetermined size between the inlet and outlet side surfaces; and(b) fastening at least one metal reinforcing ring to the screen cylinder in a substantially spiral configuration, extending over the grooves on the outlet surface to provide stability to the screen cylinder.