US PATENT SUBCLASS 406 / 169
.~.~ Having air lock

Current as of: June, 1999
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406 /   HD   CONVEYORS: FLUID CURRENT

154  DF  FLUID CURRENT CONVEYOR OUTLET MEANS {5}
168  DF  .~ With material separating receptacle {6}
169.~.~ Having air lock

DEFINITION

Classification: 406/169

Having air lock:

(under subclass 168) Subject matter wherein the load passes through a chamber which is alternately communicated, through appropriate valving, with the conveyor* and the discharge environment.

(1) Note. The chamber can be the receptacle itself.

SEE OR SEARCH THIS CLASS, SUBCLASS:

62+, for driven rotary air locks.