US PATENT SUBCLASS 165 / 292
.~.~.~ Temperature sensor in treated fluid, another temperature sensor in treating fluid

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  DF  .~ Temperature responsive or control {5}
288  DF  .~.~ Plural temperature sensors {6}
292.~.~.~ Temperature sensor in treated fluid, another temperature sensor in treating fluid

DEFINITION

Classification: 165/292

Temperature sensor in treated fluid, another temperature sensor in treating fluid:

(under subclass 288) Subject matter wherein the heat transfer apparatus comprises a heat exchanger having a treated fluid and a treating fluid in heat exchange relationship with one another, wherein one temperature sensing means measures treated fluid temperature and another temperature sensing means measures treating fluid temperature.

SEE OR SEARCH CLASS

236, Automatic Temperature and Humidity Regulation,

91, for thermostatic control of hot and cold with at least

one temperature sensor.