US PATENT SUBCLASS 432 / 233
HEATING APPARATUS ELEMENT HAVING PROTECTIVE COOLING STRUCTURE

Current as of: June, 1999
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432 /   HD   HEATING

233HEATING APPARATUS ELEMENT HAVING PROTECTIVE COOLING STRUCTURE {4}
234  DF  .~> Work skid or rail structure
235  DF  .~> Conveyor, chute or work agitator element {1}
237  DF  .~> Door, cover, door frame or rim of cover
238  DF  .~> Wall, floor or roof element

DEFINITION

Classification: 432/233

An element specialized for use in heating apparatus including structure removing heat from the element to keep it from being damaged by the heat of the apparatus.

SEE OR SEARCH THIS CLASS, SUBCLASS:

77+, for heating apparatus combined with work cooling

structure.

115, for a tumbler drum furnace having a flexible or cooled seal between the rotary and stationary parts.

116, for a tumbler drum furnace having protective cooling structure.

173, for a furnace heated by combustion within the chamber and having protective cooling means for combustion material feed structure.

SEE OR SEARCH CLASS

122, Liquid Heaters and Vaporizers, 6, for a broadly recited furnace having a cooling device comprising a closed chamber of conduit for water.

266, Metallurgical Apparatus,

190+, for a metallurgical shaft furnace having cooling means.