Diffuser for coal nozzle burner
CA 2177117 C · Owner: Babcock & Wilcox Company (The) · Inventors: Larose, Jeffrey A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A diffuser for a coal burner has a coal nozzle with an axis and an inner surface. The diffuser comprises a reducing area cone which has tapering upstream and downstream ends, for positioning in a coal nozzle at the coal nozzle axis. A frusto-conical shroud has a small diameter upstream end and a large diameter downstream end positioned around the reducing area cone. A plurality of support legs is connected to the reducing area cone and extends radially outwardly through the shroud for connecting to the coal nozzle. Each of the support legs is inclined at an acute angle to the axis of the coal nozzle for evenly spreading pulverized coal supplied through the coal nozzle and past the diffuser.
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 May 22, 1996 and granted March 30, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 22, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 22, 2018.
- 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.