US PATENT SUBCLASS 493 / 435
.~.~.~.~.~.~ Roller couple

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}
422  DF  .~.~.~ Continuous advance with folder moving with work {2}
424  DF  .~.~.~.~ Rotary folder {2}
434  DF  .~.~.~.~.~ Folding by roller {1}
435.~.~.~.~.~.~ Roller couple

DEFINITION

Classification: 493/435

Roller couple:

(under subclass 434) Method or apparatus including a second member turning about a second axis extending 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 therebetween; wherein the first and second members turning about their respective axes grippingly engage a single workpiece therebetween to cooperate and form a crease line.