US PATENT SUBCLASS 431 / 80
.~.~.~.~ Thermoelectric generator sensor

Current as of: June, 1999
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431 /   HD   COMBUSTION

18  DF  TIMER, PROGRAMMER, RETARDER OR CONDITION RESPONSIVE CONTROL {26}
75  DF  .~ By combustion or combustion zone sensor {2}
77  DF  .~.~ Of shutdown by response to sensed combustion failure or overheat {4}
78  DF  .~.~.~ By electrical control circuit {2}
80.~.~.~.~ Thermoelectric generator sensor

DEFINITION

Classification: 431/80

(under subclass 78) Apparatus in which the sensor is a means which converts energy produced by heat of combustion into electrical energy.

SEE OR SEARCH CLASS

136, Batteries: Thermoelectric and Photoelectric,

200+, for a thermoelectric generator; particularly subclasses 217+ for a thermoelectric generator operated by a burner acting merely as the heat source for the generator.

137, Fluid Handling,

66, for a valve controlled by a combustion sensor of the thermoelectric type where the burner acting on the combustion sensor is not controlled by the valve.

361, Electricity: Electrical Systems and Devices, 162, for an electrical circuit controlled by a thermoelectric device which the final element is an electromagnet or a relay.

374, Thermal Measuring and Testing,

179+, for a current generating type thermometer.