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Expired Canadian patentCanada

Method and apparatus for preventing combustion in furnace fuel feeding system

CA 1185123 A · Owner: Grossniklaus, Hans · Inventors: Grossniklaus, Hans

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

The furnace has a feeding channel through which firewood is transported into a fire chamber. A steam pipe leads into the channel. Through said pipe steam is intro-, duced into the solid fuel material in bursts as soon as a certain temperature is exceeded within the said channel. The steam increases the humidity in the air and the moisture of the firewood, thereby reliably preventing a spreading of the fire within the feeding channel, without simultaneously impairing combustion within the fire chamber.

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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 April 9, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 9, 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.
FiledOctober 15, 1981
GrantedApril 9, 1985
Term endedApril 9, 2002
Patent numberCA 1185123 A
Classification (IPC)F23K1/00 +2 more

Timeline

Timeline From CIPO dates

1982198519881991199419972000Application filedOct 15, 1981Patent grantedApril 9, 1985Term endedApril 9, 2002

Sources & verification

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