US PATENT SUBCLASS 493 / 451
.~.~ By plural relatively movable folding edges approaching work from same side (e.g., zigzag folding, etc.)

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}
451.~.~ By plural relatively movable folding edges approaching work from same side (e.g., zigzag folding, etc.)

DEFINITION

Classification: 493/451

By plural relatively movable folding edges approaching work from same side (e.g., zigzag folding, etc.):

(under subclass 405) Method or apparatus wherein the stress is applied to form a crease line by a first member moving toward work surface from a given direction and stress is applied to form a crease line by a second member moving toward the same work surface from generally the same direction.