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:
Mar. 02, 2021
Filed:
Jul. 07, 2016
Robert F. Miller, Lafayette, CA (US);
Garrett Colin Gersten, Livermore, CA (US);
Russell L. Hinckley, Sr., Modesto, CA (US);
Michael Francis Kraut, San Francisco, CA (US);
Robert F. Miller, Lafayette, CA (US);
Garrett Colin Gersten, Livermore, CA (US);
Russell L. Hinckley, Sr., Modesto, CA (US);
Michael Francis Kraut, San Francisco, CA (US);
Pacific Roller Die Company, Inc., Hayward, CA (US);
Abstract
Disclosed is a tubular core on which sheets of metal or other material can be wound and supported, for shipment, handling and dispersal, and a method for forming the core. The core comprises a metal sheet or strip which has a rectangular-ribbed cross-sectional profile comprising rectangular, flat ribs, and which is wound spirally into a tubular configuration. The core is formed by passing the strip through a plurality of roll-forming stands, to progressively form sections of the ribs and progressively define the sections into the rectangular ribbed profile in which the flat ribs collectively form a support surface for the sheets which are to be wound on the core.