US PATENT SUBCLASS 493 / 409
.~.~ Refolding or unfolding

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}
409.~.~ Refolding or unfolding {1}
410  DF  .~.~.~> Of indeterminate length work {2}

DEFINITION

Classification: 493/409

Refolding or unfolding:

(under subclass 405) Method or apparatus comprising stressing the workpiece along a crease line formed by a previous operation (a) to again crease the workpiece, or (b) to reposition the portions of the workpiece extending away from the crease line to lie in a common plane.