Screening device
CA 1299521 C · Owner: Anglo Operations Limited · Inventors: Whyte, Rodney Murison; Mostert, Phillipus Jacobus; Mcarthur, Duncan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A screening device for separating suspended solids from a liquid in a container comprises a hollow screen element with walls of a mesh structure. The screen element is submerged in the liquid, which passes from the container into the interior of the element and to an outlet. Agitators and impellers are provided on a shaft passing through the centre of the screen element. The impellers cause an increased flow of liquid past the screen element, while the agitators dislodge solids caking the mesh. The agitators are in the form of a frame which closely surrounds the screen element.
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 April 28, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 28, 2009.
- 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.