US PATENT SUBCLASS 493 / 360
.~.~.~.~ Folding by roller

Current as of: June, 1999
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493 /   HD   MANUFACTURING CONTAINER OR TUBE FROM PAPER; OR OTHER MANUFACTURING FROM A SHEET OR WEB

340  DF  WITH CUTTING, BREAKING, TEARING, OR ABRADING {9}
352  DF  .~ And with bending {4}
356  DF  .~.~ Folding {1}
357  DF  .~.~.~ With means to advance work or product {3}
360.~.~.~.~ Folding by roller

DEFINITION

Classification: 493/360

Folding by roller:

(under subclass 357) Method or apparatus wherein the crease

forming surface of the member turning about an axis is circular and extends all the way about that axis at the same distance therefrom and wherein the surface engages the workpiece in the manner of a wheel with no relative movement between the workpiece and the surface of the member.