Control equipment for a centrifugal separator and a method of controlling a separating operation
CA 2315378 C · Owner: Alfa Laval Corporate Ab · Inventors: Maehans, Olev
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Upon use of a nozzle centrifuge for separating oil water and sand from a , mixture thereof separated water and sand is continuously removed through nozzles (12), which are arranged at the periphery of the rotor of the nozzle centrifuge. Separated oil is discharged through a central outlet (13-15) in the rotor. Through a space (17) in the rotor which communicates with the , radially outer part (7b) of the rotor separating chamber (7) water may either , be supplied under pressure to the rotor or be discharged from the rotor for maintaining an interface layer, which is formed in the separating chamber (7) between separated oil and separated water at a predetermined radial level , (22). A …
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
- Filed November 10, 1999 and granted January 28, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 10, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 10, 2021.
- 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.