US PATENT SUBCLASS 406 / 60
.~.~.~.~ With check valve between screw and fluid current conveyor

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

51  DF  WITH DIVERSE POWER-DRIVEN CONVEYOR {4}
52  DF  .~ Rotary {5}
53  DF  .~.~ Screw {3}
56  DF  .~.~.~ Feeding to fluid conveyor inlet {3}
60.~.~.~.~ With check valve between screw and fluid current conveyor

DEFINITION

Classification: 406/60

With check valve between screw and fluid current conveyor:

(under subclass 56) Subject matter wherein means are provided along the load path between the screw conveyor and fluid current conveyor* which allows the load to pass in only one direction.

SEE OR SEARCH THIS CLASS, SUBCLASS:

127+, for a check valve between a receptacle and a fluid current conveyor.