US PATENT SUBCLASS 165 / 287
.~ Temperature responsive or control

Current as of: June, 1999
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165 /   HD   HEAT EXCHANGE

200  DF  WITH TIMER, PROGRAMMER, TIME DELAY, OR CONDITION RESPONSIVE CONTROL {14}
287.~ Temperature responsive or control {5}
288  DF  .~.~> Plural temperature sensors {6}
295  DF  .~.~> Including mass flow sensor
296  DF  .~.~> Branched flow of heat exchange material {1}
299  DF  .~.~> Flow of one heat exchange material controlled by temperature of another
300  DF  .~.~> Flow of one heat exchange material controlled by its own temperature

DEFINITION

Classification: 165/287

Temperature responsive or control:

(under subclass 200) Subject matter wherein the heat transfer apparatus has control means reacting to a temperature level or controlling a temperature level of the heat transfer apparatus.

SEE OR SEARCH CLASS

236, Automatic Temperature and Humidity Regulation,

91+, for thermostatic control of hot and cold; appropriate subclasses for automatic temperature and humidity control devices; subclasses 99+ for automatic temperature and humidity control devices associated with system having expanding fluid.