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Expired Canadian patentCanada

Coolant control in em casting

CA 1188480 A · Owner: Kaiser Aluminum & Chemical Corporation · Inventors: Goodrich, David G.

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

The invention relates to the application of coolant onto the surface of an electromagnetic DC cast ingot or billet where two coolant streams are directed to the solidified or partially solidified metal so that the two streams intersect a short distance away from the metal surface. By controlling the velocity and/or volume of one or both coolant streams, the point of impact on the metal surface can be brought closer to the discharge end of the inductor and thereby increase cooling rates. In this manner the excursions of molten metal which form the iciclelike appendages on EM cast ingot or billet can be effectively eliminated. When the end of the ingot or billet passes the area of coolant …

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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 June 11, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 11, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 20, 1982
GrantedJune 11, 1985
Term endedJune 11, 2002
Patent numberCA 1188480 A
Classification (IPC)B22D11/12 +1 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedJan 20, 1982Patent grantedJune 11, 1985Term endedJune 11, 2002

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