US PATENT SUBCLASS 194 / 305
.~.~.~ Circuit includes thermocouple

Current as of: June, 1999
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194 /   HD   CHECK-ACTUATED CONTROL MECHANISMS

302  DF  INCLUDING MEANS TO TEST VALIDITY OF CHECK {4}
303  DF  .~ By testing material composition {4}
304  DF  .~.~ Having electric circuit completed by check {7}
305.~.~.~ Circuit includes thermocouple

DEFINITION

Classification: 194/305

Circuit includes thermocouple:

(under subclass 304) Apparatus wherein the circuit includes a pair of conductive elements having different compositions connected serially at spaced junctions, adapted to produce a potential difference when the junctions sense different temperatures.