Automotive fuel pump vapor purge orifice and channel
CA 2131252 A1 · Owner: Ford Motor Company · Inventors: Yu, Dequan; Brockner, Henry W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fuel pump of the regenerative turbine type has an impeller enclosed between a pump cover and a pump bottom, with a pumping chamber formed between the cover and bottom along the periphery of the impeller. A vapor purge orifice, having a chamfered inlet, a plurality of different diameter sections, and a chamfered outlet leads to a vapor, purge channel which runs radially along an outside portion of the pump cover. The purge channel has baffles through which the fuel vapor flows before exiting through at least one outlet into the fuel tank. Fuel vapor is more effectively removed from the pumping chamber by the smoother sections and chamfers of the purge orifice and its energy is effectively …
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 31, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 31, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 31, 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.