US PATENT SUBCLASS 493 / 423
.~.~.~.~ Folding by endless belt

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}
422  DF  .~.~.~ Continuous advance with folder moving with work {2}
423.~.~.~.~ Folding by endless belt

DEFINITION

Classification: 493/423

Folding by endless belt:

(under subclass 422) Method or apparatus wherein the work engaging crease forming surface is, or is part of, an integral or concatenated band and is trained about a plurality of separated, noncoaxial pulleys or sprockets.