Horizontal ribbon extrusion from a hopper and three compression rollers
CA 1207515 A · Owner: North, John W. · Inventors: North, John W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is an apparatus for feeding raw material as a ribbon in a horizontal direction, preferably into a kiln for firing refractory raw material including a hopper, for the raw material the hopper having an opening in its, bottom portion with a pair of spaced transversely opposed compression rollers, the inner peripheries of which are disposed on opposite sides of the opening for engaging on opposite sides and compressing therebetween and progressively feeding the raw material as a stream downwardly. A third compression roller is below the one of the opposed compression rollers, and guide means is provided for guiding a surface of the stream from the other of the opposed compression …
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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 July 15, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 15, 2003.
- 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.