US PATENT SUBCLASS 492 / 35
.~.~ Helically aligned

Current as of: June, 1999
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492 /   HD   ROLL OR ROLLER

28  DF  WITH SPECIFIC ROLLER EXTERIOR SURFACE STRUCTURE {2}
30  DF  .~ Surface projections, indentations, or slits {5}
35.~.~ Helically aligned

DEFINITION

Classification: 492/35

Helically aligned:

(under subclass 30) Roll in which the recesses or projections have a dominant alignment that forms a helix about the axis of the roll.