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Expired Canadian patentCanada

Apparatus with burner and heat exchanger

CA 1231888 A · Owner: Danfoss A/S · Inventors: Petersen, Jýrgen H.

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

In an apparatus with a burner end heat exchanger between a, hollow cylinder (1) provided with an end wall (2) and a concentric insert (8) there is formed an annular gap (12) which is free from integers and in which the combustion gases flow from the burner to the outlet. The end of the insert (8) facing the end wall (2) is provided with an annular end wall (9) and a central burner (16) for gasified liquid or gaseous fuel centrally disposed in the insert. The central burner (16) comprises a heatable central fuel preparing chamber (17) and a passage system (26) for the air of combustion with a concentric mouth (32). As an extension of the insert (8) a burner tube (10), terminates at a spacing …

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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 January 26, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 26, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 7, 1983
GrantedJanuary 26, 1988
Term endedJanuary 26, 2005
Patent numberCA 1231888 A
Classification (IPC)F23D5/00 +2 more

Timeline

Timeline From CIPO dates

19841987199019931996199920022005Application filedNov 7, 1983Patent grantedJan 26, 1988Term endedJan 26, 2005

Sources & verification

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