Moving bed particulate filter
CA 1067016 A · Owner: Simon-Hartley Limited · Inventors: Allanson, John T.; Austin, Eric P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A filtration apparatus consisting of a filtration vessel which contains a bed of particulate material and whose lower portion is of diminished cross section area leading to an outlet through which particulate material may be withdrawn. The apparatus is designed to permit the withdrawal of material from the base of the bed thereof and to provide for the supplying of replacement particulate material to the bed in such a manner that the bed has a free inclined upper surface extending downwardly from an opening through which replacement particulate material is fed to the bed. The apparatus is designed to cause the liquid to be filtered to enter the bed through the free inclined upper surface …
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 27, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 27, 1996.
- 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.