Igniter
CA 1198331 A · Owner: Champion Spark Plug Company · Inventors: Hinton, Jonathan W.; Ryan, Nolan A.; Rempes, Paul E. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An igniter for Jet and other internal combustion engines is disclosed. A ceramic insulator containing a substantial proportion of silicon nitride is disposed annularly within the shell of the igniter so that spark discharge occurs along a surface of the silicon nitride insulator adjacent the spark gap between a center electrode and a ground electrode. An igniter having such a silicon nitride insulator is particularly adapted for service under conditions of severe thermal, mechanical and electrical, stress, in an engine having a high voltage (e.g. 10,000, volts or more), high energy (e.g. up to 20 joules) ignition system. Use of silicon nitride as an insulating material in such igniters …
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 December 24, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 24, 2002.
- 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.