A two stroke internal combustion engine
CA 2403659 A1 · Owner: Coney, Michael Willoughby Essex · Inventors: Richards, Roger; Coney, Michael Willoughby Essex
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A two stroke internal combustion engine having a compressed air inlet port (13) and an exhaust port (14) the flow through which is controlled by suitable valves (3, 4). Fuel is injected through a fuel injector (5). The timing of the opening of the valve is such that as the piston (2) approaches top dead centre and with the air inlet valve (3) closed the exhaust valve (4) is closed such , that some exhaust gas is trapped and compressed in the combustion chamber thereby increasing the temperature within the combustion chamber and hence facilitating ignition. The invention also contemplates initiating combustion before the air inlet valve (3) is closed.
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 30, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 30, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 30, 2023.
- 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.