US PATENT SUBCLASS 493 / 442
.~.~.~ 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

395  DF  BENDING {6}
405  DF  .~ Folding {13}
416  DF  .~.~ With means to advance work or product {8}
442.~.~.~ Folding by roller {1}
443  DF  .~.~.~.~> Roller passive reaction member {1}

DEFINITION

Classification: 493/442

Folding by roller:

(under subclass 416) Method or apparatus wherein the crease forming member turns about an axis and includes a circular surface extending equidistant about that axis 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.