Centrifugal separator apparatus for removing particulate material from an air stream
CA 2378800 A1 · Owner: Ronning Engineering Co. Inc. · Inventors: Kolb, Robert; Ronning, Richard L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Horizontal, negative pressure centrifugal separator apparatus (48 248, 348, 448, 548), is provided for separating particulate material from an air stream that exhausts from the outlet, of a horizontal industrial size, rotary drum dryer (32). The centrifugal separator is especially, adapted to be connected to the negative pressure inlet of a primary fan (42) which pulls large, volumes of air through the rotary drum dryer. The separator apparatus includes wall structure, which defines two aligned primary spiral separation plenum chambers (e.g. 78 80) joined to an, intermediate spiral discharge plenum chamber (e.g. 82) all of which , intercommunicate. A pair of oppositely facing plenum …
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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 March 25, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 25, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 25, 2024.
- 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
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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.