A gas range includes a burner, a burner control unit, a piezoelectric igniter and a safety valve. The safety valve is situated between a gas supply and the burner. A thermocouple is situated near the burner. The piezoelectric igniter is used to ignite gas which vents out of the burner. As a flame occurs...http://www.google.com/patents/US5375585?utm_source=gb-gplus-sharePatent US5375585 - Combination of a piezoelectric igniter and a safety valve for a gas range
