Method and apparatus for drying wood strands
CA 2293918 A1 · Owner: Gobel, Richard J. · Inventors: Gobel, Richard J.; Bates, Elton
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus (10) for drying particles derived from wood such as sawdust wafers, flakes, paper sludge, and strands. The wood particles are introduced into a, first drying stage (12) and conveyed through a dryer (16) in which the wood particles, are heated to an elevated temperature (900°F) to drive off moisture and VOC's from, the particles. The wood particles are then delivered to a second drying stage (14), through which they are also conveyed. The particles are now heated to a second elevated temperature (600°F) to substantially eliminate any moisture in the particles, so the particles can now be used to make wood products. A heating system includes, a combustion chamber (22) to …
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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 January 5, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 5, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 5, 2022.
- 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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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.