Tank-filling shut-off valve
CA 2196734 A1 · Owner: Aquion Partners Limited Partnership · Inventors: Grayson, John R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A valve mechanism for supplying liquid to a container until the surface of the liquid reaches a predetermined level includes a valve body disposable in the container and defining a cavity, an inlet port for communication with a liquid source and an outlet port communicating with the interior of the container. A valve seat is provided in the cavity adjacent to the outlet port, and a valve member in the shape of a ball is disposed within the cavity and moveable between a normal closed condition and an open condition relative to the valve seat for respectively closing and opening the outlet port. A guide tube depends from the valve body in communication with the outlet port and has a float …
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 4, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 4, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 4, 2019.
- 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.