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US 5,857,643 AGranted
Core for winding a web of deformable material
AssigneeEastman Kodak Company
InventorsDaniel Martin Czuprynski, Zbigniew Hakiel, Allan Thomas Hoy
Life of this patent
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Abstract
A core for winding a web of deformable material which is thicker along its margins, particularly knurl-edged webs. The core includes a rigid cylindrical member (24) and a deformable cover (26) supported by the rigid member. First and second detachable end members (18,20) are adapted for attachment to the ends of the rigid member. The hardness of the end members is harder than the deformable cover such that the knurled margins overlay the end members.
Claims15
A wound roll comprising:
- a web of deformable material having margins;
- a core for winding the web of deformable material, the core including:
- (i) a rigid cylindrical member extending from a first end to a second end;
- (ii) a deformable cover having two ends, a length, and an outer diameter, said cover being supported by said rigid member throughout said length and having a first hardness;
- (iii) a first detachable cylindrical end member having a web support surface for supporting the web margins, said first end member being attachable to and detachable from said rigid member at said first end, said first end member having an outer diameter approximately equal to the outer diameter of said deformable cover and a second hardness greater than said first hardness, said first end member having an annular shoulder abutting one of said ends of said rigid member and one of said ends of said cover;
- and
- (iv) a second detachable cylindrical end member having a web support surface for supporting the web margins, said second end member being attachable to and detachable from said rigid member at said second end, said second end member having an outer diameter approximately equal to the outer diameter of said deformable cover and a third hardness greater than said first hardness, the web margins overlaying said web support surfaces of said first and second end members, said second end member having an annular shoulder abutting the other of said ends of said rigid member and the other of said ends of said cover.
4 more elements
A wound roll comprising:
- a web of deformable material having knurled margins;
- a rigid cylindrical member extending from a first end to a second end;
- a deformable cover having two ends, a length, and an outer diameter, said cover being supported by said rigid member throughout said length and having a first hardness;
- a first detachable cylindrical end member having a web support surface for supporting the knurled web margins, said first end member being attachable to and detachable from said rigid member at said first end, said first end member having an outer diameter approximately equal to the outer diameter of said deformable cover and a second hardness greater than said first hardness, said first end member having an annular shoulder abutting one of said ends of said rigid member and one of said ends of said cover;
- and
- a second detachable cylindrical end member having a web support surface for supporting the knurled web margins, said second end member being attachable to and detachable from said rigid member at said second end, said second end member having an outer diameter approximately equal to the outer diameter of said deformable cover and a third hardness greater than said first hardness, the knurled margins of web being supported by said web support surfaces of said first and second end members, said second end member having an annular shoulder abutting the other of said ends of said rigid member and the other of said ends of said cover.
3 more elements
Dependencies are inferred from the claim text.