Improved coal pulverizer classifier cone and control system
CA 2133882 C · Owner: Wark, Rickey Edward · Inventors: Wark, Rickey Edward
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved coal pulverizes classifying system in which the feedpipe and classifier cone are provided with extensions to protect coal flow into the pulverizes from the annular fine-lifting airflow from the pulverizes throat. The feedpipe and cone extensions replace traditional intermittent discharge structure improving, flow through the classifier system and reducing the disruptive effects of the discharge on the ,annular flow from the pulverizes throat. An adjustable classifier venturi is also provided to adjust the exit angle and exit velocity of the fines leaving the classifier cone by the combustion delivery chute.
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 7, 1994 and granted April 15, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 7, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 7, 2016.
- 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.