Flush apparatus for watering systems
CA 2050417 C · Owner: Sheets, Keith · Inventors: Sheets, Keith; Hostetler, Eldon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A flushing system for poultry watering systems is provided which includes a by pass of the upstream pressure regulator, self sealing caps for the stand pipes and an automatic flush valve at the end of the supply line. A shut-off valve in the by pass is provided which is actuatable manually or automatically in response to a timer environmental, sensor or water condition sensor. The automatic flush valve opens a response to a predetermined pressure level and connects the supply line to a drain hose. The self sealing caps prevent leakage out of the standpipes and are especially formed to prevent blow outs of the seal. Where multiple pressure regulators are used in the supply line additional …
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 August 30, 1991 and granted April 19, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 30, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 30, 2013.
- 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.