Fireplace having multi-zone heating control
CA 2227951 C · Owner: Gepilano, Dick D. · Inventors: Thomas, Martin; Gepilano, Dick D.; Georgieff, James Karl
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fireplace adapted to heat multiple heating zones of a building controlled , by, a control circuit which adjusts the heat input to the fireplace airflow , through the, fireplace and ducting of the airflow to the various zones individually in response to a, call for heat by thermostats in the zones. The fireplace may also be adapted to provide, cooled or circulated air to the zones and may also serve to provide heating to the, zones in the event of an electrical power outage. The fireplace is provided with a, cabinet having ducts through which air is conveyed by use of a fan to a tubetype heat, exchanger, the heat exchanger also in communication with the hot flue gases exiting, 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
- Filed January 27, 1998 and granted July 30, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 27, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 27, 2020.
- 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.