US PATENT SUBCLASS 62 / 222
.~.~.~ Of expansion valve or variable restrictor


Current as of: June, 1999
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62 /   HD   REFRIGERATION

132  DF  AUTOMATIC CONTROL {19}
190  DF  .~ Refrigeration producer {12}
216  DF  .~.~ Of or by evaporation zone {4}
222.~.~.~ Of expansion valve or variable restrictor {2}
223  DF  .~.~.~.~> By external condition
224  DF  .~.~.~.~> By condition at low side {1}


DEFINITION

Classification: 62/222

(under subclass 216) Apparatus in which the device controlled is a valve or variable restrictor of an expansion device.

SEE OR SEARCH THIS CLASS, SUBCLASS:

194, 197+, 204+, and 218, for other sensing control of expansion means with a variable restrictor.

528, for an evaporator with an adjustable flow controller.

SEE OR SEARCH CLASS

236, Automatic Temperature and Humidity Regulation, appropriate subclass, particularly 67+, for a thermostatically controlled valve of more general application.