Method of and apparatus for separation of scum from a liquid
CA 2614515 C · Owner: Murray, Bradley Desmond Leslie · Inventors: Murray, Bradley Desmond Leslie
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for the separation of scum from a liquid including a housing (22) incorporating two side walls in spaced relationship and a scraper wall disposed between said side walls. A rotational device (12) mounted in the housing (22) provides rotational motion about one or more horizontal axes. The rotational device (12) includes one or more paddles (13-16) which extend outwardly with respect to the rotation axis forming a substantial sealing engagement with the opposed inner faces of the side walls of the housing. The scraper wall and rotational device are arranged such that when immersed in water, the paddle(s) (13-16) may be rotated to become at least partly submerged and the …
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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
- Filed July 13, 2005 and granted February 25, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 13, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.