US PATENT SUBCLASS 72 / 147-- .~.~ With interposes to space adjacent coil convolutions

US PATENT SUBCLASS 72 / 147
.~.~ With interposes to space adjacent coil convolutions

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	DF	.~ To form spiral coil {2}
147		.~.~ With interposes to space adjacent coil convolutions

DEFINITION

Classification: 72/147

With interposes of space adjacent coil convolutions:

(under subclass 146) Subject matter wherein a member (or plurality of members) is (or are) moved with the work or product into contact with a whorl of deflected product to separate each whorl from the previously deflected whorl and the next deflected whorl.

(1) Note. This subclass (147) will serve as a locus of cross-reference patents disclosing the making of a metal open spiral coil (i.e., a coil, similar to a balance spring, having spiral convolutions wherein successive convolutions do not contact one another.