US PATENT SUBCLASS 493 / 438
.~.~.~.~ Folding by passive reaction member

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}
436  DF  .~.~.~ Continuous advance past folder {2}
438.~.~.~.~ Folding by passive reaction member {1}
439  DF  .~.~.~.~.~> Folding indeterminate length work {1}

DEFINITION

Classification: 493/438

Folding by passive reaction member:

(under subclass 436) Method or apparatus including utilizing the energy of a moving sheet or web workpiece by use of means to effect the formation of a crease line, which means is stationary during formation of the crease line.