High turbulence slotted circular screen with column-spaced rotating cleaners
CA 1136585 A · Owner: Black Clawson Company (The) · Inventors: Chupka, David E.; Seifert, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Docket 6369, HIGH TURBULENCE SLOTTED CIRCULAR SCREEN WITH COLUMN-SPACED ROTATING CLEANERS, Abstract of the Disclosure A method and apparatus for treating a suspension of liquid, paper making fibers and undesirable rejects to remove a substantial portion of the rejects from the suspension. A cylindrical screen is utilized which has narrow slots on the order of 0.001 to 0.008 inch in width disposed normally with respect to the screen axis and bars projec-, ting from the inlet face of the screen and cooperating with rotating foils for creating a field of high intensity fine, scale turbulence adjacent the inlet face of the screen. This permits the paper making fibers to pass through the narrow …
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 November 30, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 30, 1999.
- 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.