Tree residue reduction apparatus
CA 1231627 A · Owner: Canadian Patents And Development Limited/Societe Canadienne Des Brevets Et D'Exploitation Limitee · Inventors: Hamilton, Douglas D.; Viereck, Hans; Palfy, Robert M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Improved apparatus for reducing to a smaller size, residue or debris left behind after a tree processing or harvesting operation. The apparatus includes a first reduction unit which includes a plurality of cutter knives radiating outwardly from a hub at positions spaced circumferentially therearound and longitudinally therealong and cooperate with fixed knives to reduce the residue to smaller size. Downstream there is located a second reduction unit (a common hammer mill) and downstream therefrom a fan unit for delivering the reduced sized particles to a collecting container or other area. The units preferably are vertically oriented i.e. stacked one on top of the other resulting in …
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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
- Granted January 19, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 19, 2005.
- 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.