US PATENT SUBCLASS 493 / 303
.~ Convolute winding

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


493 /   HD   MANUFACTURING CONTAINER OR TUBE FROM PAPER; OR OTHER MANUFACTURING FROM A SHEET OR WEB

269  DF  TUBE MAKING {15}
303.~ Convolute winding {3}
304  DF  .~.~> By use of external guide member
305  DF  .~.~> By use of plural mandrels {1}
307  DF  .~.~> By manually driven or manipulated means

DEFINITION

Classification: 493/303

Convolute winding:

(under subclass 269) Method or apparatus comprising coiling an elongated sheet or web workpiece upon itself so that each subsequent progressive convolution is of greater (or lesser) radial dimension from the cylinder axis than the previous one, so that the formed hollow cylinder is comprised of at least two radially overlapping convolutions.

SEE OR SEARCH CLASS

242, Winding, Tensioning, or Guiding, particularly

570+, for convolute winding on spool or core.