US PATENT SUBCLASS 198 / 677
.~.~ With means for securing helical surface formation to driving member

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

618  DF  CONVEYOR SECTION {26}
657  DF  .~ Screw {11}
677.~.~ With means for securing helical surface formation to driving member

DEFINITION

Classification: 198/677

(under subclass 657) Apparatus wherein means is provided for attaching a helical surface formation to a driving member, which member usually is in the form of a shaft located in the axis of rotation of the formation.

SEE OR SEARCH THIS CLASS, SUBCLASS:

664+, for plural helical surface formations in the nature of a plurality of coaxial elements, which structures commonly provide means for securing the elements thereof to a driving shaft.