US PATENT SUBCLASS 493 / 420
.~.~.~.~ Buckle chute folding

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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}
419  DF  .~.~.~ Folding by buckling {1}
420.~.~.~.~ Buckle chute folding {1}
421  DF  .~.~.~.~.~> Plural folding operations making multiple folds

DEFINITION

Classification: 493/420

Buckle chute folding:

(under subclass 419) Method or apparatus including a passageway along which the sheet or web workpiece is to slide, which passageway has a blocked end to be abutted by the moving sheet or web to create compressive force along the direction of movement of the workpiece so that the workpiece ends to bend transversely to the direction of movement, which passageway includes an opening in its bottom upstream from the blocked end, so that the workpiece bends back on itself as it falls down through the opening.