Tubular core assembly having inside-diameter reducing end member

Details Tubular core assembly having inside-diameter reducing end member Tubular core assembly having inside-diameter reducing end member

1993-04-20

1994-08-23

Stodola, Daniel P.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

2426094, B65H 7510, B65H 7530

Patent

active

053400500

ABSTRACT:
A tubular core assembly for winding or unwinding sheet material, such as newsprint or Rotogravure Print, wherein the opposed ends of an elongate cylindrical core are provided with inside diameter-reducing annular core insert members. The inside diameter-reducing annular core insert members are secured by a mechanical interlocking member to a central core body formed by multiple wraps of a paperboard material. The mechanical interlocking member includes at least one radially interlocking member secured to and extending radially at least partially through the central core member and the annular core insert member. Because of the mechanical interlocking relationship between the inside diameter-reducing annular core insert members and the central core body member, the inside diameter-reducing annular core insert members are secured to the central core body member in positive locking relationship.

REFERENCES:
patent: 1118860 (1914-11-01), Howarth
patent: 1137470 (1915-04-01), Elixman
patent: 2052541 (1936-08-01), Roberts et al.
patent: 2076870 (1937-04-01), Taylor
patent: 3204763 (1965-09-01), Gustafson
patent: 3275257 (1966-09-01), Cherniavskyj
patent: 3482607 (1969-12-01), Villani et al.
patent: 4295921 (1981-10-01), Bopst, III
patent: 4874139 (1989-10-01), Kewin
patent: 4875636 (1989-10-01), Kewin
patent: 5236141 (1993-08-01), Kewin

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