Tank venting control system
CA 2284983 C · Owner: King, Timothy J. · Inventors: Chestnut, Barry S.; King, Timothy J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus (410) is provided for controlling discharge of fuel vapor from within a vehicle fuel tank (14). Apparatus (410) includes a valve container (28) with an inlet (32), and outlet (126) and a chamber (52), a valve member , (50) formed for movement between an open position allowing fuel vapor flow through outlet (126) and a closed position blocking fuel vapor flow through outlet (126), and a secondary float valve (452) disposed between inlet (32) and valve member (50). Valve member (50) includes a central post (72) and wing segments (70) defining flow passages (84) sized to permit fuel vapor flow therethrough and to block momentarily liquid fuel (20) flow therethrough. …
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 May 6, 1998 and granted April 8, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 6, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 6, 2020.
- 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.