Patent ID: 11920406
Assignee: CENTER DESIGN PTY LTD.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 13:
14. The screen assembly of claim 1, wherein: a diameter of the drum is about the same as a diameter of the flexible screen about the supporting member; and/or the drum, or part of the drum has a shaped profile, such that as the line member is wound onto, or off the drum, the diameter of the drum at a position where the line member contacts the drum varies; and/or the drum, or part of the drum has one of the following shapes, or a combination thereof: conical; partially conical; diverging cones; converging cones; cylindrical; substantially cylindrical; a “stepped” profile comprising multiple cylinders of different diameters; a tapered cone at either end optionally with a short parallel portion at, or adjacent the center; a “reverse barrel”; tapering from a larger diameter closest to the supporting member, to a smaller diameter further away from the supporting member, or vice versa.