IP Library › Granted Patent US 7,156,341
Granted Patent B2
US 7,156,341 · App. 10/901,182 · Granted Jan 2, 2007

Ribbon core for universal mounting

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Quick Facts
Patent No.
US 7,156,341
App. No.
10/901,182
Granted
Jan 2, 2007
Kind
B2
Abstract

A versatile core has a tubular body with opposing ends and includes a circumferential wall for receiving the sheet roll. A plurality of circumferentially spaced apart crush ribs project radially inward from the annular inner surface and extend axially between the ends for nesting in corresponding slots in the spindle. The crush ribs are defined by a plurality of cut outs, which are provided at each of the opposing ends and are defined by the circumferential wall. The cut outs accept and engage various configurations of ribs of a spindle assembly, with the ribs of the spindle located between the crush ribs of the core. The exterior surface of the tubular body may have a texture selected to provide the desired adhesion between the tape (attaching the sheet roll to the core) and the body surface of the cylindrical body.

Claims (9)

1. A core for supporting a wound sheet roll, the core comprising:

a tubular body having ends and including an outer surface for receiving a sheet roll;

an inner surface having a space for receiving a spindle, said inner surface comprising a first interior opening and a second interior opening larger than said first interior opening; and

circumferentially spaced apart ribs formed at said second interior opening, said ribs projecting radially inward and extending axially for cooperating with a spindle, and wherein the spaced apart ribs project radially inward past said first interior opening by a distance from about 0.5 millimeters to about 3 millimeters.

2. A core for supporting a wound sheet roll, the core comprising:

a tubular body having ends and including an outer surface for receiving a sheet roll;

an inner surface having a space for receiving a spindle, said inner surface comprising a first interior opening and a second interior opening larger than said first interior opening; and

circumferentially spaced apart ribs formed at said second interior opening, said ribs projecting radially inward and extending axially for cooperating with a spindle, and wherein the spaced apart ribs project radially inward past said first interior opening by a distance of approximately 1 millimeter.

3. The core of claim 1 or 2 , wherein the spaced apart ribs are provided at the ends of the tubular body.