US PATENT SUBCLASS 62 / 132
AUTOMATIC CONTROL

Current as of: June, 1999
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62 /   HD   REFRIGERATION

132AUTOMATIC CONTROL {19}
133  DF  .~> Responsive to vehicle body motion or traction {1}
135  DF  .~> By congealed removable product condition {2}
139  DF  .~> By accumulation on freezing surface, e.g., ice {1}
141  DF  .~> Of closed system sorbent type {2}
149  DF  .~> Withdrawing or adding refrigerant from or to normally closed system
150  DF  .~> Preventing, removing or handling atmospheric condensate {1}
157  DF  .~> Time or program actuator {1}
159  DF  .~> Selective heating or cooling {1}
161  DF  .~> With correlated manual or external operator and condition sensing means, e.g., cutoff or reset {3}
165  DF  .~> Solidified gas {3}
169  DF  .~> Vacuumized chamber with open outlet {1}
171  DF  .~> Gas-liquid contact cooler, fluid flow
172  DF  .~> Air compessor, cooler and expander
173  DF  .~> Of external fluid reheating
174  DF  .~> Trapping and discharging refrigerant batches
175  DF  .~> Diverse, cascade or compound refrigeration-producing system
176.1  DF  .~> Humidity sensor {5}
177  DF  .~> Of external fluid or means {6}
190  DF  .~> Refrigeration producer {12}

DEFINITION

Classification: 62/132

(under the class definition) Apparatus comprising means to sense an operating condition or change of operating condition and exert a control on cooling means or means handling material cooled or to be cooled.

SEE OR SEARCH THIS CLASS, SUBCLASS:

126, for an indicator or tester correlated with automatic control.

231+, for a time or program actuator.

SEE OR SEARCH CLASS

137, Fluid Handling, appropriate subclass for automatic control of fluid handling of general application, particularly 59+, for freeze responsive safety means and subclasses 78+ for atmospheric condition change responsive control.

165, Heat Exchange,

200, for automatic control of a heat exchanger not specialized by structure to refrigeration.

236, Automatic Temperature and Humidity Regulation, appropriate subclass for an automatic temperature regulation system.