(under subclass 467) Apparatus including means acting to keep the refrigerant in a normal operating condition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
85, for related processes.
195, for automatic control of or by impurity removing means.
292, for means for charging a closed refrigeration producer.
303, for means cleaning external parts of refrigeration apparatus.
317+, for means for purifying an external fluid or ice melt. 401+, for air compressing-cooling-expanding type refrigeration produce which may include means for purifying
the air used as a refrigerant.
470+, for a lubricant separator.
476+, particularly subclasses 490+, 495+ and 497 for means for separating substances necessarily present in a sorbent type refrigeration producer.
SEE OR SEARCH CLASS
55, Gas Separation, appropriate subclasses, for gas or vapor purification in general.
96, Gas Separation: Apparatus, for gas separation apparatus, per se.
210, Liquid Purification or Separation, appropriate subclass for liquid purification in general.
