Fireplace systems
CA 1063470 A · Owner: Boyd, Charles M. · Inventors: Boyd, Charles M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fireplace is designed for installation in an enclosure such as a house. It includes a firebox for confining the combustion region. Of course, it has an exhaust outlet. A heat-exchange system is in heat-transfer relationship with the firebox. An air supply feeds air from outside the enclosure. A circulation system conducts air through the heat-exhange system and in communication with the enclosure. A control arrangement governs the conveyance of air from the supply to both the firebox and the heatexchange system. A thermostat system within the enclosure operates the control means in response to temperature changes. Outside air is utilized both to control the degree of combustion and in the …
Read the whole patent
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 2, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 2, 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.