Rotary wood waste grinder
CA 1076867 A · Owner: J.H. Hughes · Inventors: Hughes, John H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A large diameter rotary drum has an open top and a floor in which are mounted a plurality of freely rotating sprockets having sharpened teeth. Wood wastes large blocks, trimmings from shake mill operations broken shakes and the, like are deposited into the drum and are carried over the sprockets. The rolling action of the teeth on the wastes grinds the wastes to much smaller pieces which fall through openings around the sprockets and are carried away by a conveyor.
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
- Granted May 6, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 6, 1997.
- 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.