Rotating disc filter
CA 1234765 A · Owner: A. B. Hedemora Verkstader · Inventors: Ragnegdrd, Samuel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rotating disc filter consists of disc sectors of preferably stainless or acid proof steel disposed about a filter shaft. Saddles of a folded plate form a sector deck and support for filter cloth and the troughs of the folded plate together with the filter cloth abutting the saddles form internal filtrate channels extending from the outer periphery of the sector towards the filter shaft. Such a construction renders it possible to obtain sectors combining the requirements of large open filter cloth area and small internal volume affording for the filter operation an advantageously great ratio between filter surface and internal filtrate volume, high stability against lateral forces, and …
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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 April 5, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 5, 2005.
- 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.