Plasma-arc ignition system
CA 2124070 C · Owner: Ortech Corporation · Inventors: Paterson, John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An ignition system for igniting fuel within an engine cylinder, comprising: at least one ignition plug disposed in the cylinder; high-voltage pulse generator means connected to he ignition plug for generating a pre-pulse of static charge within the cylinder so as to ionize the fuel in the engine cylinder and thereby increase conductivity thereof the, pre-pulse comprising a high negative voltage high frequency burst of full-wave rectified alternating current; high-current pulse generator means connected to the ignition plug for generating a high-current pulse within the engine cylinder so as to form a plasma adjacent the plug for initiating combustion of the fuel within the engine cylinder; …
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 23, 1992 and granted October 30, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 23, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 23, 2014.
- 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.