Flushing system for aquaculture tank
CA 1082999 A · Owner: Sanders Associates, Inc. · Inventors: James, Ronald W.; Suomala, Robert A.; Bierds, William F. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract A system is provided for removing solid wastes from the bottom of an aquaculture tank for the rearing of aquatic animals in a stacked arrangement of cages, in which a minimum of water is removed during the process such that the tank in which the cages are arranged need not be completely drained and in which the water level never drops below the animal in the topmost cage. The waste removal system includes a tapered, funnel-shaped bottom member for the aquaculture tank and a fast-opening and closing valve at the base of the funnel. Settled solid waste is dislodged and removed from the tank in a double pulsed flushing operation in which the valve is first opened and then rapidly …
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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 August 5, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 5, 1997.
- 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.