.~ With means utilizing the heated material for heating work
(under subclass 219) Apparatus having structure by which the heated fluid material is (1) directed against work or (2) passed in heat transferring relationship to structure for applying heat to work.
SEE OR SEARCH CLASS
34, Drying and Gas or Vapor Contact With Solids, appropriate subclass for residual structure for drying or for contacting a solid with a gas or vapor. See the search reference in the class definition of Class 432 for the line between Classes 34 and 432.
237, Heating Systems,
50+, for a system in which a heat generator heats air and having a means for distributing the air to rooms or chambers; and subclasses 56+ for a room or chamber heating system in which heat from a heat generator is distributed by flowing water.
239, Fluid Sprinkling, Spraying, and Diffusing,
128+, for a fluid sprinkling, spraying or diffusing device having heating or cooling means for the system or system fluid.