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Expired Canadian patentCanada

Direct chill casting mould with controllable impingement point

CA 1320334 C · Owner: Alcan International Limited · Inventors: Mueller, Friedrich Peter; Leblanc, Guy

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

1-, Abstract, An apparatus is described for continuously casting molten metal. It includes (a) an open-ended direct chill casting mould comprising a mould plate having an inner axially extending wall or walls defining a mould cavity (b) coolant, delivery aperture or apertures adjacent the mould cavity adapted to discharge a stream or streams of coolant inwardly in the direction of metal movement to impinge on an ingot being formed, and (e) deflector means for deflecting the coolant stream or streams in a variable direction dependent on the local shrinkage conditions of the ingot being formed such that the coolant impinges upon the ingot at a constant distance below the mould plate around …

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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 July 20, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 20, 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.
FiledDecember 8, 1988
GrantedJuly 20, 1993
Term endedJuly 20, 2010
Patent numberCA 1320334 C
Classification (IPC)B22D11/12 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedDec 8, 1988Patent grantedJuly 20, 1993Term endedJuly 20, 2010

Sources & verification

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