Low nox burner
CA 2099112 C · Owner: Holman Boiler Works, Inc. · Inventors: Lang, Jerry M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A low NOx burner combustion, system (10) which may be adjusted for optimum burn rates, temperature and, oxygen levels. The burner (10) incorporates a plurality of gas nozzles (38), which individually inspirate a portion of the combustion air and a spin vane diffuser (28) to rotate and mix the gases within the primary combustion zone, (24). The diffuser (28) is axially adjustable in order to vary the distance between the vane and the first combustion zone (24) while the blades (30) of the diffuser (28) can be angularly adjusted to optimize the rotation and mix of the gases. Air for combustion is supplied, through primary (20) secondary (42), and tertiary (54) passages to create distinct …
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 October 29, 1992 and granted May 6, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 29, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 29, 2014.
- 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.