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Expired Canadian patentCanada

Method and apparatus for continuous casting mold stirring

CA 1211918 A · Owner: Asea Aktiebolag · Inventors: Kollberg, Sten

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Abstract From the Canadian patent

A method and apparatuis for stirring the nonsolidified regions of a cast strand, the strand being formed in a mold of a continuous casting machine is disclosed. Molten metal enters the mold in a tap stream or jet from a casting pipe or enters by direct injection into the mold. A static magnetic field is generated across the mold and acts in the path of the tap stream in the melt in the mold. The magnetic field, due to the movement of the metal stream retards the velocity of the tap stream in the melt and splits the tap stream, thus stirring the melt. The magnetic poles which generate the static magnetic field are positioned substantially adjacent the casting pipe or the mold so that certain …

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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 30, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 30, 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.
FiledApril 20, 1983
GrantedSeptember 30, 1986
Term endedSeptember 30, 2003
Patent numberCA 1211918 A
Classification (IPC)B22D27/02

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedApril 20, 1983Patent grantedSep 30, 1986Term endedSep 30, 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.