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Expired Canadian patentCanada

Apparatus for unwrapping and removal of rubber tubes

CA 1287466 C · Owner: Colbachini, Giuseppe Aldinio · Inventors: Colbachini, Giuseppe Aldinio

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

Combined apparatus for performing the processes to which a rubber tube formed on a metal core must necessarily be subjected after having been vulcanised cornprises a bed constituted by a series of conveyor belts disposed in longitudinal sequence in a horizontal plane, onto which the tubes are individually placed after vulcanisation. Along one side of the bed a carriage carrying a spool can be moved with the spool being driven to rotate by a slipping motor At the two ends of the bed there are positioned headers having forks for attachment to the cores on which the tubes are formed. By rotating the spool and simultaneously moving the carriage it is possible to unwrap and recover bindings from …

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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 August 13, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 13, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 19, 1986
GrantedAugust 13, 1991
Term endedAugust 13, 2008
Patent numberCA 1287466 C
Classification (IPC)B29C35/00 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedNov 19, 1986Patent grantedAug 13, 1991Term endedAug 13, 2008

Sources & verification

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