Automotive ignition systems
CA 1301824 C · Owner: Aisin Seiki Kabushiki Kaisha · Inventors: Iwasaki, Shinichiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An automotive ignition system including an ignition capacitor electrically connected to a primary winding of a ignition transformer for providing energy to a spark plug which is connected to a second winding of the ignition transformer is disclosed. A charge circuit charges the ignition capacitor from a DC-DC voltage converter and includes an inductor and a thyristor. A discharge circuit discharges the ignition capacitor to the primary winding, and a control circuit operates the charge circuit and the discharge circuit in proper timed sequence during a demanded firing duration. 118/map
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
- Granted May 26, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 26, 2009.
- 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.