US PATENT SUBCLASS 34 / 171
.~.~.~ Shelf-to-shelf or zigzag treated material flow

Current as of: June, 1999
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34 /   HD   DRYING AND GAS OR VAPOR CONTACT WITH SOLIDS

523  DF  APPARATUS {40}
165  DF  .~ Gravity flow type {7}
168  DF  .~.~ With gas or vapor flow for contact with treated material {4}
171.~.~.~ Shelf-to-shelf or zigzag treated material flow {2}
172  DF  .~.~.~.~> Dumping shelves or pockets
173  DF  .~.~.~.~> Rotary stirrer or shelf

DEFINITION

Classification: 34/171

(under subclass 168) Apparatus in which there is either, or both, (1) arrangement for dropping material from one shelf member to a lower shelf member, or (2) plural baffle members forming a tortuous or zigzag course for the material being treated.

SEE OR SEARCH THIS CLASS, SUBCLASS:

164, for vibrating shelves.

178, for such structure without gas or vapor contact means.

211, for superposed floors where no means for gravity flow are claimed.

SEE OR SEARCH CLASS

366, Agitating, 336+, for baffles in a stationary mixing chamber.

432, Heating,

130+, for a material heater of the shelf-to-shelf type having combustion products generating structure.