(under subclass 65) Control systems wherein the safety valve is retained in its set or open position under the action of a solenoid, which solenoid is energized by the electric current generated by a thermoelectric element, e.g., a thermocouple, subject to the heat of the pilot burner or main burner.
SEE OR SEARCH CLASS
251, Valves and Valve Actuation,
11, for heat motor actuated valves of general utility, and subclasses 68+ for electrical trip actuation of biased valves, including electrical resetting.
431, Combustion,
80, for a burner assembly including a shutdown control responsive to combustion failure or overheat having a thermoelectric combustion sensor.
