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Expired Canadian patentCanada

Method and apparatus for wrapping paper rolls

CA 1100028 A · Owner: Westvaco Corporation · Inventors: Deligt, John

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Abstract of the Disclosure, Large mill reels of paper are protectively wrapped for shipment by a head capping method which folds an oversized header sheet simultaneously over the entire circular edge of a reel end-face with a volumetrically expansible elastomer, toroid. Closely spaced pleats in the header sheet excess material are simultaneously formed with the edge fold and are creased and pressed into a band of adhesive around the reel circumference. Subsequently, a cylindrical surface wrap is applied around the reel girth overlapping the header pleats and adhesively secured thereto. Since the head capping step does not require rotation of a reel, the capping and surface wrapping …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted April 28, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 28, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 24, 1978
GrantedApril 28, 1981
Term endedApril 28, 1998
Patent numberCA 1100028 A
Classification (IPC)B65B7/00 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedAug 24, 1978Patent grantedApril 28, 1981Term endedApril 28, 1998

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.