Drum screen
CA 1285526 C · Owner: Kone Kmw Ab · Inventors: Okvist, Alf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In order to enable thickness screening of the chips in a drum screen comprising d rotatable screen drum with screening slits (1) extending in circumferential direction and formed between a plurality of parallel rings (3) arranged one after the other and joined together at a predetermined distance from each other by means of cross pieces (4) extending axially on the inside of the rings (3), the invention suggests that at least a plurality of the rings (3) of the drum screen is provided with a plurality of guide plates (5) arranged along their inner circumference surfaces sub-, stantially parallel to the screening slits (1) between the rings (3) in order to turn long splinters and chip pieces …
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 July 2, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 2, 2008.
- 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.