Fireplace chimney furnace
CA 1059397 A · Owner: Sherman, Gerald A. · Inventors: Sherman, Larry P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A heat exchanging chimney in the form of a tubular heat exchanger which functions as a furnace and which is mounted above a conventional fireplace with a preferably transparent or translucent closure means over the front is described. The fireplace is constructed such that it draws outside air for combustion of the fuel and air from the rooms being heated. The chimney is specifically in the form at least one vertically oriented multiple tube shell type heat exchanger in place of the conventional fireplace chimney wherein the flue gasses pass inside the tubes and the room air is heated inside the shell. In operation the, fireplace and heat exchanging chimney achieve substantial economies in …
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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 July 31, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 31, 1996.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.