(under subclass 104) Vaporizing compressing heating tubes or coils for heating the mineral-oil and a drum or expansion chamber connected to the tube or drum. An expansion valve may or may not be placed between the tube and drum, and the drum may or may not be heated.
SEE OR SEARCH THIS CLASS, SUBCLASS:
110, for tubular vaporizers.
SEE OR SEARCH CLASS
122, Liquid Heaters and Vaporizers,
40, and 235.11+.
159, Concentrating Evaporators, 2,.
208, Minerals Oils: Processes and Products,
131, for processes of cracking mineral oils employing this type of apparatus.