US PATENT SUBCLASS 266 / 181
.~.~.~.~ Means forming cascading array

Current as of: June, 1999
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266 /   HD   METALLURGICAL APPARATUS

168  DF  MEANS FOR TREATING ORES OR FOR EXTRACTING METALS {3}
171  DF  .~ By means applying heat to work, e.g., furnace {10}
176  DF  .~.~ With means for moving solid material to or through heating zone {4}
177  DF  .~.~.~ By means for moving charge through zone {2}
181.~.~.~.~ Means forming cascading array

DEFINITION

Classification: 266/181

(under subclass 177) Device wherein the heating means has a plurality of shelves disposed one above the other and the moving means conveys the charge from one shelf to the next adjacent lower shelf in a zigzag fashion.

SEE OR SEARCH CLASS

432, Heating,

129+, for a means for cascading work through a furnace of general utility.