US PATENT SUBCLASS 72 / 145
.~.~ By movable-periphery tool external of coil

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

127  DF  BY DEFLECTING SUCCESSIVELY-PRESENTED PORTIONS OF WORK DURING BODILY MOVEMENT THEREOF (E.G., FOR COILING, LEVELLING, CURVING OR TROUGHING MATERIAL IN MOVEMENT) {11}
135  DF  .~ To form helical coil or tube {7}
145.~.~ By movable-periphery tool external of coil

DEFINITION

Classification: 72/145

By movable periphery tool external of coil:

(under subclass 135) Subject matter wherein the instrumentality includes a work-engaging surface (or group of surfaces) facing the axis-of-bend*, wherein the surface(s) moves relatively to said axis and also moves with the deflected product portions during coiling.

(1) Note. The surface may be driven, or may be moved solely by frictional contact with the moving work.

SEE OR SEARCH THIS CLASS, SUBCLASS:

49+, for disclosure of tube-seaming apparatus showing use of one or more rollers outside of the tube that is being produced.