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US 6,182,921 B2Granted
Flange for a roll
AssigneeAgfa-Gevaert
InventorsWilfried Muylle, Dirk Peeters
Life of this patent
Estimating the term…
Abstract
Flange (20) that is inserted by pressing or screwing into a core (10), such that the flange (20) can be removed manually from the core (10), by exerting a pure torque upon the flange (20).
Claims10
A composition spool comprising:
- a core having an inner diameter d, a smooth inner surface, a center and an end, said core being made of cardboard;
- and
- a flange comprised of polymeric material, said flange having:
- a disc portion having a first outer diameter;
- and
- a hub portion for fitting axially within the core, the hub portion having a
- second outer diameter D and a helical protrusion, the helical protrusion having a height h;
- wherein the first outer diameter of the disc portion is larger than 40 mm and smaller than 200 mm and the dimensions in millimeters of the inner diameter d of the core, the second outer diameter D of the hub portion and the height h of the helical protrusion are such that the value of Dmax-d≦d/72 (2.0 mm), where Dmax is the maximum permissible value of D.
5 more elements
Dependencies are inferred from the claim text.