Filtration method and apparatus
CA 1187817 A · Owner: B. & R. Engineering Limited · Inventors: Allison, William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Filtration apparatus includes a layer of a porous elastomeric material which is mounted so as to be expandable on the application of fluid pressure to one side thereof. Liquid to be filtered enters an inlet, passes through the material and out through a port which is provided on the opposite side of the layer to the inlet port. During filtration solid collects on the inlet side of material. After a filtration operation expansion fluid may be supplied through a fluid inlet and causes the material to balloon outwardly thus causing solid to be removed therefrom. Additionally, the pores in the material are expanded on the application of the expansion fluid pressure so that any solid material …
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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 May 28, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 28, 2002.
- 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.