Rotating ring disc slot screen
CA 1318284 C · Owner: Eriksson, Arne F. · Inventors: Eriksson, Arne F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A screening apparatus is provided having a plurality of axially aligned discs or rings which are lined up one behind the other, spaced a predetermined distance from each other and rotate as a single unit about a central longitudinal axis. A large central aperture is formed through each of the discs to form a tubular, drum type structure within which material to be separated is placed.. Upon rotation of the tubular structure acceptable material flows through the slots between adjacent discs while over-size material exits one open end of the tubular structure.
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 25, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 25, 2010.
- 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.