Apparatus and method for processing inhomogeneous material such as tobacco
CA 2058290 A1 · Owner: Brown, John R. · Inventors: Owen, Roy A.; Brown, John R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for separating particles having a larger area-to-weight ratio from those having a smaller area-to-weight ratio in a series of steps including moving the mixed particles transversely across a moving gas stream to entrain therein a large proportion of those particles having a larger area-to-weight ratio. An illustrated embodiment is an apparatus comprising a number of modular threshing (4, 8A-C) and classifying (6 10A-B, 12), units connected by conveyors within housing (20A-G). When used to separated lamina from stem of tobacco leaf the lamina is entrained , in the gas flow and removed on transverse conveyors (16A-D). The stem is removed from an exit (18). The design …
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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 29, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 29, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 29, 2012.
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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.