US PATENT SUBCLASS 493 / 415
.~.~.~.~ Defined by feed roll pair

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}
413  DF  .~.~ Folding of indeterminate length work by swinging work guiding means (e.g., zigzag folding, etc.) {1}
414  DF  .~.~.~ Swinging passage {1}
415.~.~.~.~ Defined by feed roll pair

DEFINITION

Classification: 493/415

Defined by feed roll pair:

(under subclass 414) Method or apparatus wherein the element in engagement with each planar surface turns about an axis more than 360 deg. and rollingly engages the workpiece with a radially outwardly facing peripheral surface positioned in a circle about the axis.