Two-stage fuel delivery system for an internal combustion engine
CA 2120058 A1 · Owner: Niebrzydoski, John L. · Inventors: Niebrzydoski, John L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A two-stage fuel delivery system (10) for a two-stroke internal combustion engine that includes a first stage pump (12) having a first pump chamber (16) with an inlet (20) coupled to a fuel source (21), an outlet (22) and a diaphragm (14) responsive to pressure pulsations from the engine crankcase for reciprocation within the chamber. A second stage pump (24) includes a second pump chamber (28) having an inlet (30) coupled to the outlet of the first chamber, an outlet (32) for delivering fuel under pressure to engine fuel injectors (34) or the like, a permanent magnet (46) for mounting on the flywheel (48) of the engine for rotation in synchronism with operation of the engine, and a …
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 March 28, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 28, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 28, 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.