US PATENT SUBCLASS 493 / 316
.~.~ Oscillating movement of work contacting vacuum means


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

309  DF  CONTAINER OR TUBE ERECTING, OPENING, OR COLLAPSING {5}
313  DF  .~ By direct application of vacuum or fluid pressure {3}
316.~.~ Oscillating movement of work contacting vacuum means {1}
317  DF  .~.~.~> Compound movement


DEFINITION

Classification: 493/316

Oscillating movement of work contacting vacuum means:

(under subclass 313) Method or apparatus including structure to engage the sheet or web workpiece and encircle the area from which atmospheric pressure is removed, which structure is adapted to move to-and-fro about a fixed pivot.