Adjustable orifice burner assembly
CA 2291360 A1 · Owner: Griffioen, Robert Howard · Inventors: Griffioen, Robert Howard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An orifice assembly for use in a gaseous fuel combustion device includes a housing having a gas flow through passage and an outlet orifice providing gaseous fuel into a burner. The outlet orifice is sized to meter the rate of gaseous fuel flow into the burner. An adjustment member is movably fixed to the housing to change the gaseous fuel flow rate through the outlet orifice for a second type of gaseous fuel.
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 December 2, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 2, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 2, 2021.
- 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.