Froth removing system
CA 1319328 C · Owner: Mercier, Robert · Inventors: Mercier, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed a system for removing froth at the surface of the water in a decantation basin of a water-treatment plant. One end of the basin is formed with a froth-collecting trough having an operative wall of which the top includes a froth landing ramp positioned to extend above and below the water surface in the basin so that the froth may be pushed over it and into the trough. A heating chamber is formed above the trough with a vertical opening which is closed by a flexible or rigid skirt extending down to the ramp the skirt, being free of the ramp and being able to yield to pressure from froth moving on the ramp to allow the said froth to enter into the chamber and be dropped into …
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 June 22, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 22, 2010.
- 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.