Low pressure drop rotating vertical vane inlet passage for coal pulverizer
CA 2096954 A1 · Owner: Giammaruti, Robert J. · Inventors: Giammaruti, Robert J.; Watson, George B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An annular passage arrangement for a pulverizer includes vertically extending inner and outer passage walls which define a "boxed" annular passage. The annular passage space has an inlet for receiving flow from an air plenum and an outlet for vertically channeling the flow into a pulverizing zone. The annular passage is divided by vanes having a tapered end at the inlet end of the passage and an outlet end located at the passage outlet. The outlet end of each vane extends at an acute angle to the horizontal and the tapered end of each vane is vertically oriented within the annular passage. This vane orientation reduces pressure drop as the plenum air is fanned up into the pulverizing zone. …
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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 25, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 25, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 25, 2015.
- 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.