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Expired Canadian patentCanada

Process and device for continuous production of a composite strip

CA 1211355 A · Owner: Swiss Aluminium Ltd. · Inventors: Buren, Ingo; Severus, Harald; Bregenzer, Rene

CIPO record

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Abstract From the Canadian patent

The continuous production of a composite strip (10) with at least one core layer (7) of plastic and metal outer layers (8,8') on both sides is such that the superimposed layer. are subjected to heat and pressure as they are passed through at least one gap (3) between rolls (1,1') with parallel axes the size of the said roll gap (3) being smaller than the total thickness of the layers before they are bonded together. A tensile force (Z) acting in the direction of movement (x) of the strip is applied to the strip (10) to lead the layers through the roll gap (3), and the rolls (1,1') are pulled round by the tensile force (Z) applied to the strip (10). The tensile force (Z) is transferred to …

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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 16, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 16, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 23, 1982
GrantedSeptember 16, 1986
Term endedSeptember 16, 2003
Patent numberCA 1211355 A
Classification (IPC)B29C65/20 +1 more

Timeline

Timeline From CIPO dates

1983198619891992199519982001Application filedDec 23, 1982Patent grantedSep 16, 1986Term endedSep 16, 2003

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