Vapor recovery system for fuel dispensers
CA 2135086 A1 · Owner: Finlayson, Ian M. · Inventors: Finlayson, Ian M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A dispenser for volatile liquids with a vapor collection system is disclosed which controls the rate of operation of a vacuum pump 118 so that a simple vacuum intake 148 disposed preferably inside, but not sealed with the filler neck can be used to collect only the vapors displaced from the fuel tank 110 by the fuel 104. The vacuum pump 118 is controlled by a controller 114 which receives from various sensors 124, 128, 132 and 136 signals representative of the fuel vapor/air ratio immediately outside the tank inside the tank, and/or inside the vapor recovery conduit 122 and/or of the pressure relative to atmosphere inside the tank 110 and/or of the rate of flow of liquid being dispensed. …
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 November 4, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 4, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 4, 2016.
- 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.