US PATENT SUBCLASS 72 / 167
.~.~ Including thinning of portion of work-section

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}
166  DF  .~ By use of deflectors arranged to bend work longitudinally of direction of work-movement {4}
167.~.~ Including thinning of portion of work-section

DEFINITION

Classification: 72/167

Including thinning portion of work section:

(under subclass 166) Subject matter wherein the instrumentality comprises elements (a) having work-engaging surfaces extending transversely across the direction of movement of the work, and (b) engaging opposite faces of the

work, and in which, as claimed or disclosed, the distance between the work-engaging surfaces is less at one side margin of the work than at the other side margin thereof, and also less than the original work thickness.

(1) Note. See subclass 136 and the Figure accompanying (1) Note therein for further discussion of the apparatus and an illustration of an exemplary form thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:

136, for similar structure plus a pitch adder wherein a helical coil is formed, and see (1) Note above.