(under subclass 41.01) Cooling systems including a vaporized liquid other than water which is liquefied and then allowed to expand into gas, thus removing heat directly from the engine parts or from the engine coolant.
SEE OR SEARCH THIS CLASS, SUBCLASS:
41.2, for aqueous vapor systems, especially subclass 41.25, for systems in which all the circulating coolant is
vaporized.
SEE OR SEARCH CLASS
62, Refrigeration, for refrigerating systems, per se.
