US PATENT SUBCLASS 198 / 721
.~.~ With antifriction or movable supporting surface

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

618  DF  CONVEYOR SECTION {26}
717  DF  .~ Pusher conveyor and separate load support surface {7}
721.~.~ With antifriction or movable supporting surface

DEFINITION

Classification: 198/721

(under subclass 717) Apparatus wherein the load-supporting surface is specially designed or is provided with means whereby the coefficient of friction of said surface is indicated as being low.

SEE OR SEARCH THIS CLASS, SUBCLASS:

629, for plural conveying sections which cooperate to simultaneously move a given load, one of said sections being a pusher.