Fluid additive regulating apparatus and method
CA 2089071 A1 · Owner: Mcivor, Robert C. · Inventors: Mcivor, Robert C.; Mcivor, Robert C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cleansing agent for example water, for an internal combustion engine is added in proportion to the flow rate of the fuel air, or fuel/air mixture supplied to the engine. The addition is controlled by a fluid flow sensor (10) which produces a pulse output indicative of the fluid flow rate. The output is supplied to a conditioning circuit (30) which produces a voltage spike for actuating an injector (16A) in a mixing chamber (26). Direct measurement of the fluid flow rate provides an immediate and accurate indication of the amount of additive required as the flow rate changes.
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 9, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 9, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 9, 2013.
- 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.