US PATENT SUBCLASS 406 / 150
.~.~.~ Serially arranged gates

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

108  DF  INTAKE TO FLUID CURRENT CONVEYOR {7}
147  DF  .~ Terminal type {1}
148  DF  .~.~ Intake gate {2}
150.~.~.~ Serially arranged gates

DEFINITION

Classification: 406/150

Serially arranged gates:

(under subclass 148) Subject matter wherein the terminal* is provided with a second movable closure downstream of the first closure and past which a load article must move before being transmitted through the conveyor*.

(1) Note. An air lock is typically formed by the two gates.