US PATENT SUBCLASS 493 / 249
.~.~.~ By buckling

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

51  DF  CONTAINER MAKING {2}
186  DF  .~ Pliable container (e.g., bag, envelope, etc.) {9}
243  DF  .~.~ Including folding {8}
249.~.~.~ By buckling

DEFINITION

Classification: 493/249

By buckling:

(under subclass 243) Method or apparatus comprising application of compressive stress to the workpiece parallel to the planar surfaces thereof causing the workpiece to yield in columnar failure.

SEE OR SEARCH THIS CLASS, SUBCLASS:

419, for folding of a sheet or web, generally, by buckling.