Rotary kiln burner
CA 2397869 A1 · Owner: Plant, Gerald · Inventors: Yearham, Bruce; Plant, Gerald
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A direct coal fired burner system (22) for a rotary kiln (20) in which the burner (36) has a multi-barrel construction through which primary air for conveying coal is heated with tertiary air sourced from the rotary kiln (20) and the shape of the emerging flame is controlled by a first annulus of swirling tertiary air adjacent the primary airstream and by a second annulus of laminar tertiary air defining an outer envelope for the flame. The volume and relative velocities of air in the tertiary air supplies are all controllable through the use of respective dampers provided in tertiary air supply conduits.
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 January 19, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 19, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 19, 2023.
- 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.