Chip spreader for air-lock feeder
CA 2288562 A1 · Owner: Prough, J. Robert · Inventors: Prough, J. Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
By establishing a relatively flat, for example non-sharply conical, top profile of wood chips in a treatment vessel (such as a chip bin) the, chips will be more uniformly steamed or otherwise treated (or have the treatment time of the chips extended) compared to if a conventional sharply conical top profile is established in the treatment vessel. The relatively flat top profile of the chips in the treatment vessel is established, by utilizing a plurality (typically at least three and preferably four or , more), individually controlled gates (typically having a substantially polygon shape, such as triangular). The gates are mounted below the inlet of chips into a treatment vessel so to …
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 November 4, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 4, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 4, 2021.
- 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.