The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 28, 1995
Filed:
Apr. 21, 1994
Lawrence E Renck, Hartsville, SC (US);
Sonoco Products Company, Hartsville, SC (US);
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 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.