US PATENT SUBCLASS 493 / 305
.~.~ By use of plural mandrels

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

269  DF  TUBE MAKING {15}
303  DF  .~ Convolute winding {3}
305.~.~ By use of plural mandrels {1}
306  DF  .~.~.~> On turret

DEFINITION

Classification: 493/305

By use of plural mandrels:

(under subclass 303) Method or apparatus including use of a first member about which a sheet or web workpiece is wrapped to be shaped into a hollow cylinder and including a second member about which a sheet or web workpiece is wrapped to be shaped into a hollow cylinder.