US PATENT SUBCLASS 198 / 673
.~.~.~ Bearing means directly engages periphery of the helical surface formation

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

618  DF  CONVEYOR SECTION {26}
657  DF  .~ Screw {11}
672  DF  .~.~ Including bearing means {1}
673.~.~.~ Bearing means directly engages periphery of the helical surface formation

DEFINITION

Classification: 198/673

(under subclass 672) Apparatus wherein the means to sustain is positioned about the outer periphery of the formation.