(under subclass 339) Subject matter wherein the stored heat is used for transmitting heat energy to the object or material by an air motion as a result of difference in density and the action of gravity.
SEE OR SEARCH THIS CLASS, SUBCLASS:
347, for convection space heater.
SEE OR SEARCH CLASS
34, Drying and Gas or Vapor Contact With Solids, appropriate subclasses for convection type drying.
126, Stoves and Furnaces,
67+, for hot air stove structure of the convection type and subclasses 99+ for hot air furnace structure.
165, Heat Exchange, appropriate subclasses for convection heating. 237, Heating Systems, appropriate subclasses for heating systems for rooms or spaces utilizing convective heating of the fluid (air) in the rooms or space.
