US PATENT SUBCLASS 493 / 458
.~.~ Sequential, diverse folds

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}
458.~.~ Sequential, diverse folds

DEFINITION

Classification: 493/458

Sequential, diverse folds:

(under subclass 405) Method or apparatus comprising bendingly stressing a sheet or web workpiece beyond its elastic limit along a line to form a first permanent crease and subsequently bendingly stressing the sheet or web workpiece beyond its elastic limit along a line to form a second permanent crease, wherein the first and second creases are formed by nonidentical means.