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Expired Canadian patentCanada

Burner for coal, oil or gas firing

CA 1309011 C · Owner: Larue, Albert Daniel · Inventors: Larue, Albert Daniel

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

An improved burner having a very particularly designed gas element for the combustion of coal oil or, gas places a plurality of retractable and rotatable gas elements in close proximity to the outlet end of the tubular burner nozzle of the burner which are shielded from combustion air provided around the tubular burner nozzle by a flame stabilizing ring having a plurality of openings adapted to closely receive each of the plurality of retractable and rotatable gas elements. Eddies produced by the flame stabilizing ring create a low oxygen/fuel rich flame resulting in reduced NOx formation.

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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 October 20, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 20, 2009.
  • 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 11, 1989
GrantedOctober 20, 1992
Term endedOctober 20, 2009
Patent numberCA 1309011 C
Classification (IPC)F23M9/06 +2 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedJan 11, 1989Patent grantedOct 20, 1992Term endedOct 20, 2009

Sources & verification

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