Burners
CA 2064799 C · Owner: Lanemark International Limited · Inventors: Kirk, David Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A burner head (1), suitable for use in a furnace has an array or matrix of , combustion air apertures divided into three (outer, middle and inner) aperture rings (6 7, 8). Gaseous fuel is conveyed , down central fuel pipe (9) which flows through gallery (G) to individual broached apertures (6a 7a, 8a) of aperture rings (6, 7, 8), which fuel mixes with combustion air being drawn up through the centre of said apertures. The aperture matrix is configured to eliminate anomaleous "hot spots" which would accelerate corrosion as well as equalising flow distribution through the gallery (G) to the apertures (6a, 7a, 8a).
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 June 17, 1991 and granted January 18, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 17, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 17, 2013.
- 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.