Wave flame control
CA 2311801 A1 · Owner: Hazard, Gary M. · Inventors: Hazard, Gary M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A burner system (10) is provided which creates standing waves (Fig. 6) in the gas/air flow within the burner so as to vary the pressure distribution along the length of the burner and thus the heights of the flames produced along the length of the burner. By changing the standing waves the pressure , distributions within the burner are changed thereby causing the burner to , produce changing flame patterns that simulate realistic wood burning flame patterns. In another embodiment (Fig. 5) two orthogonal or sinusoidal gas/air , flows offset by a phase angle are generated within the burner creating a beat frequency. By varying the phase angle offset the rate of occurence of the , beats …
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 November 25, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 25, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 25, 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.