US PATENT SUBCLASS 165 / 267
.~ Means to heat or cool for predetermined periods of time (e.g., duty cycle, time-temperature profiler, etc.)

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}
267.~ Means to heat or cool for predetermined periods of time (e.g., duty cycle, time-temperature profiler, etc.) {2}
268  DF  .~.~> Predetermined time variable set point
269  DF  .~.~> Duty cycle (e.g., pulse duration or pulse frequency modulation, etc.)

DEFINITION

Classification: 165/267

Means to heat or cool for predetermined periods of time (e.g., duty cycle, time-temperature profiler, etc.):

(under subclass 200) Subject matter wherein said instrument controls the heat transfer apparatus to cause the apparatus to operate for a pre-set interval of time.

SEE OR SEARCH CLASS

236, Automatic Temperature and Humidity Regulation,

46, for automatic temperature and humidity control devices with timer other than clock.