Double screen solids removal from liquid
CA 1069443 A · Owner: Jones And Attwood Limited · Inventors: Wilson, Reginald A.E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for removing solid material from a flow of sewage or other liquid, the apparatus having a duct through which in use sewage will flow and two screens located in said duct adjacent to each other, one of said screens being arranged to receive solid material filtered from the sewage flow by the other screen and there being also provided a vertically reciprocable lifting plate which is adapted to collect solid material from said one screen and lift it to a position which is above the upper surface of the flow of sewage.
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
- Granted January 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 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.