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Expired Canadian patentCanada

Web winding machine and method

CA 1322357 C · Owner: Bradley, John Junius · Inventors: Bradley, John Junius

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A surface winder is provided for developing rolls of web material wound on a core including a magazine for dispensing cores sequentially and a nip for receiving cores sequentially, the core transport means between said source and nip arranged to follow a generally hypocycloidal path to provide cusps for adhesive application to the core and for introducing cores into the nip, a surface winder including a pair of winding belts traveling at different speeds and in different directions, and web severance means including a pair of web pinching points one of which is on the moving web and the other on a stationary part of the web.

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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 September 21, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 21, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 11, 1986
GrantedSeptember 21, 1993
Term endedSeptember 21, 2010
Patent numberCA 1322357 C
Classification (IPC)B65H67/00

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedApril 11, 1986Patent grantedSep 21, 1993Term endedSep 21, 2010

Sources & verification

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