US PATENT SUBCLASS 414 / 140.7
.~.~ By use of screw conveyor

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

137.1  DF  MARINE LOADING OR UNLOADING SYSTEM {14}
139.4  DF  .~ Marine vessel to/from shore {11}
140.7.~.~ By use of screw conveyor

DEFINITION

Classification: 414/140.7

By use of screw conveyor:

(under subclass 139.4) Apparatus wherein the loading or unloading structure includes a helically ribbed, rodlike member adapted to turn about its axis and force material

being loaded or unloaded to move by the action of the helical rib.