US PATENT SUBCLASS 432 / 178
.~.~ Work chamber or its wall heats chamber feed

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


432 /   HD   HEATING

120  DF  WORK CHAMBER HAVING HEATING MEANS {12}
159  DF  .~ Combustion products heat work by contact {19}
178.~.~ Work chamber or its wall heats chamber feed

DEFINITION

Classification: 432/178

(under subclass 159) Apparatus in which combustion feed moving toward the work chamber receives heat indirectly through a wall of the work chamber.

SEE OR SEARCH CLASS

431, Combustion,

161, for a combustion chamber not specialized to the heating of materials in which the heat of the chamber heats the chamber feed.