Orifice shield for drainage pipe
CA 2537551 C · Owner: Gavin, Peter W. · Inventors: Gavin, Peter W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An orifice shield for distributing water flowing from an orifice in a pipe and preventing blockage of the orifice. The orifice shield includes a housing including a cage the cage being defined by a first plate joined to a second plate via fins the fins being joined via a plurality of lateral members the cage including a plurality of openings or slots defined between the fins and the lateral members the first plate including a central shaft extending downwardly toward the second plate. A freely rotating fan is mounted on the shaft. The fan is adapted to evenly distribute the water flowing from the orifice via the openings or slots. The housing may also be a box housing including a plurality …
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 February 21, 2006 and granted February 19, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 21, 2026.
- 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.