Slow speed hammermill for size reduction of wood chips
CA 2226045 C · Owner: Global Processing Systems, Inc. · Inventors: Elliott, James C.; Blake, John R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hammermill having a rotor assembly and a screen bar assembly is provided to reduce oversized wood chips. The hammermill may also be used to reduce wood and/or bark, the rotor assembly includes flexible hammers which are pivotally attached to allow each flexible hammer to move radially inward or radially outward during rotation of the rotor assembly. Each flexible hammer preferably includes a recess with a portion of a support rod disposed therein to limit radial movement inward and outward relative to the rotor assembly. The screen bar assembly includes a plurality of screen bars having a beveled surface formed along one edge of each screen bar disposed adjacent to the rotor assembly. The …
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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 December 30, 1997 and granted October 9, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 30, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 30, 2019.
- 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.