US PATENT SUBCLASS 62 / 402
.~ Motor-type expander

Current as of: June, 1999
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62 /   HD   REFRIGERATION

401  DF  AIR COMPRESSOR, COOLER AND EXPANDER TYPE {1}
402.~ Motor-type expander {1}
403  DF  .~.~> Reciprocating element-type motor, e.g., piston

DEFINITION

Classification: 62/402

(under subclass 401) Apparatus in which the expanding air actuates a motor to produce work.

SEE OR SEARCH THIS CLASS, SUBCLASS:

38+, for related liquefied gas product producing apparatus.

SEE OR SEARCH CLASS

415, Rotary Kinetic Fluid Motors or Pumps, appropriate subclass for a turbine of general utility.