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:
Feb. 01, 1994
Filed:
Sep. 16, 1991
Leonard F Fiore, Foley, MN (US);
Gregory P Brandl, Holdingford, MN (US);
Allen R Voit, Sauk Rapids, MN (US);
Champion International Corporation, Stamford, CT (US);
Abstract
An apparatus and process is provided for testing the hardness of paper rolls. The apparatus includes a tester that is selectively moveable across a roll of paper. The tester includes an impact anvil which strikes the paper at a selected frequency and which determines the hardness of the paper roll based on forces encountered by the impact anvil. The tester further includes an encoder wheel for identifying relative positions on the paper roll at which each test is performed. The impact anvil and the encoder wheel are operatively connected to a computer which receives signals and calculates hardness at each of the plurality of positions tested. The computer provides output of data on the most recent traversal of a paper roll and on plural sequentially tested rolls to assess trends in the hardness of paper rolls produced by a particular machine.