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Expired Canadian patentCanada

Method and device for igniting gas planing

CA 1071525 A · Owner: Centro-Maskin Goteborg Ab · Inventors: Sipek, Ladislav

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

This invention relates to a method and a device for causing ignition in a gas planing process for removing work-, piece defects in a steel rolling mill. The method is based on applying heat to a workpiece by means of a movable heat source which has a point effect so that the heated or molten portion of the workpiece forms a strip which extends perpendicularly to the flow direction of the planing oxygen. The device for carrying out the method comprises one or more planing burners and one or more movable ignition means so connected to the burner that the ignition means can move relative to the planing burner both in parallel with and perpendicularly to the planing direction and at the same …

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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 February 12, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 12, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedFebruary 12, 1980
Term endedFebruary 12, 1997
Patent numberCA 1071525 A
Classification (IPC)B23K7/06

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedFeb 12, 1980Term endedFeb 12, 1997

Sources & verification

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