Liquid shut-off valve
CA 2088020 C · Owner: Babb, Matthew T. · Inventors: Babb, Matthew T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A liquid fuel shut-off valve for insertion through the feed pipe opening and mounting inside a fuel tank including in, combination, a valve body having an inlet and an outlet joined by a first bore aligned axially with the feed pipe through which the fuel is fed to fill the tank, a valve spool rotatably mounted in a cross-bore formed in the valve body between the inlet and the outlet and attached to a float extending outward from the valve body that is responsive to the level of liquid in the tank and a, valve shut-off formed in the spool including a second bore formed transverse thereto for passing fuel between the inlet and the outlet, and a relief opening formed in the trailing edge of …
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 January 25, 1993 and granted June 23, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 25, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 25, 2015.
- 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.