US PATENT SUBCLASS 72 / 146
.~ To form spiral 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}
146.~ To form spiral coil {2}
147  DF  .~.~> With interposes to space adjacent coil convolutions
148  DF  .~.~> With core inside coil

DEFINITION

Classification: 72/146

To form spiral coil:

(under subclass 127) Subject matter wherein the instrumentality diverts work around a transverse axis-of-bend* to produce a coil* having a plurality of radially superimposed convolutions or whorls.

(1) Note. See Lines With Other Classes, Other Class Relationships, Class 242, of this class (72) for the differences between the subject matter of this subclass (146) and the subject matter of Class 242.