Burner ignition system
CA 1046134 A · Owner: Scott And Fetzer Company (The) · Inventors: Santo, Eugenio E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A burner ignition circuit produces high frequency sparks between a pair of spaced electrodes connected to opposite sides of a secondary winding of a transformer in response to the repetitive discharge of a capacitor through the primary winding under the control of an SCR powered by a full wave rectifier such that sparks are produced throughout both half waves of AC power. The discharge capacitor is primarily charged from the power supply through a current limiting resistor. The turn-on time of the SCR is minimized by a trigger circuit including a diac which discharges another capacitor into the gate of the SCR when the voltage thereacross exceeds a selected value. Circuitry including a …
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 January 9, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 9, 1996.
- 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.