US PATENT SUBCLASS 414 / 169
.~.~.~.~ Accumulating means includes serially arranged closures

Current as of: June, 1999
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414 /   HD   MATERIAL OR ARTICLE HANDLING

147  DF  CHAMBER OF A TYPE UTILIZED FOR A HEATING FUNCTION AND MATERIAL CHARGING OR DISCHARGING MEANS THEREFOR {6}
160  DF  .~ Charging of chamber {7}
167  DF  .~.~ By driven device for transporting material to a stationary, at least in part, accumulating means for subsequent release into chamber by gravity {2}
168  DF  .~.~.~ Receptacle moved back and forth along inclined way (e.g., skip, etc.) {1}
169.~.~.~.~ Accumulating means includes serially arranged closures {1}
170  DF  .~.~.~.~.~> Each comprising bell of bell and hopper type accumulating means

DEFINITION

Classification: 414/169

Accumulating means includes serially arranged closures:

(under subclass 168) Apparatus wherein the material accumulating means includes two or more serially-arranged closures (e.g., to inhibit change in pressure gradient), one of which releases the material into the chamber.

(1) Note. While it is necessary that each closure occupy a flow-path-blocking position during some portion of a chamber-charging cycle, it is not necessary that more than one closure be in such a position (i.e., a position in which it stops incoming material) during the period in which a charge is being accumulated for release into the chamber.