US PATENT SUBCLASS 62 / 228.1
.~.~ Compressor or its drive controlled

Current as of: June, 1999
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62 /   HD   REFRIGERATION

132  DF  AUTOMATIC CONTROL {19}
190  DF  .~ Refrigeration producer {12}
228.1.~.~ Compressor or its drive controlled {6}
228.2  DF  .~.~.~> For ice or ice cream maker
228.3  DF  .~.~.~> By refrigerant pressure
228.4  DF  .~.~.~> By variable speed motor or pulley type mechanism
228.5  DF  .~.~.~> By variable compressor output, e.g., unloading, staging, etc.
229  DF  .~.~.~> By external cooled gas
230  DF  .~.~.~> By condition of power source

DEFINITION

Classification: 62/228.1

Compressor or its drive controlled:

(under subclass 190) Apparatus relating to a compressor or its drive.

SEE OR SEARCH THIS CLASS, SUBCLASS:

172, for control of or by an air compressing type refrigeration producer.

187+, particularly subclass 180, for diverse control or response involving control of an external fluid or means.

191, for control of or by a jet type compressor.

193+, for control of or by lubricating means.

196+, for control of or by a by-pass, e.g., compressor unloading.

215, for a single sensor responsive to plural conditions and controlling a compressor. 236+, for control of a compressor of or by evaporation zone

condition.

SEE OR SEARCH CLASS

417, Pumps,

1+, for condition responsive control of a pump or compressor drive motor, subclasses 212+ for condition responsive control of a pump or compressor drive transmission or displacement; subclasses 274+ for condition responsive control of the volumetric capacity of a pump or compressor; and subclasses 279+ for condition responsive control of the fluid handled by a pump or compressor.