US PATENT SUBCLASS 72 / 50
.~.~ Using roller conforming to seam contour

Current as of: June, 1999
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72 /   HD   METAL DEFORMING

48  DF  BY TOOL-COUPLE PRESSING TOGETHER ADJACENT SURFACE PORTIONS OF SAME WORK (E.G., TUBE-SEAMER) {2}
49  DF  .~ To form helically-seamed tube {1}
50.~.~ Using roller conforming to seam contour

DEFINITION

Classification: 72/50

Using roller conforming to seam contour:

(under subclass 49) Subject matter wherein the tool couple includes one or more rollers* to form the joint, and wherein a cross section of the joint at the zone of formation complements (i.e., fits into) the cross-section of the roller(s) at that zone.