US PATENT SUBCLASS 493 / 209
.~.~.~ By reciprocatory heat sealer


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}
189  DF  .~.~ Including heat sealing {9}
209.~.~.~ By reciprocatory heat sealer


DEFINITION

Classification: 493/209

By Reciprocatory heat sealer:

(under subclass 189) Method or apparatus including use of means to raise the thermal level of the sheet or web workpiece, which means moves to-and-fro along a straight line or about a fixed pivot point during operation.