Filtering apparatus and method of cleaning such an apparatus
CA 1333262 C · Owner: Vital, Jean-Louis · Inventors: Lemmel, Hubert; Vital, Jean-Louis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a filtering apparatus and a method of washing such an apparatus. The filtering apparatus with an upward flow of a fluid to be treated in an enclosure closed at least at one end and containing a fixed floating bed of filtering particles of a density less than that of the fluid to be treated is, characterized in that the pipe for discharging the filtered materials in suspension has the form of a lyre with vent and dimensions allowing the column of fluid contained in the enclosure to be emptied at a speed higher than the minimum fluidization speed, the filtering particles having a characteristic mass per unit volume between 5 kg/m3 and 500 kg/m3 and a pipe for …
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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 November 29, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 29, 2011.
- 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.