US PATENT SUBCLASS 198 / 671
.~.~ With means to assist in discharging from or feeding to the housing of the helical surface information

Current as of: June, 1999
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198 /   HD   CONVEYORS: POWER-DRIVEN

618  DF  CONVEYOR SECTION {26}
657  DF  .~ Screw {11}
671.~.~ With means to assist in discharging from or feeding to the housing of the helical surface information

DEFINITION

Classification: 198/671

(under subclass 657) Apparatus wherein means is provided to facilitate or control either the entry of the load into the housing of a helical surface or the exit of the load therefrom.

SEE OR SEARCH THIS CLASS, SUBCLASS:

670, for a means which may be structurally similar to a means for this subclass (671), but wherein the functioning thereof is influenced by a condition which exists within the housing (e.g., pressure).