US PATENT SUBCLASS 72 / 179
.~.~ Including complementary roller-couple

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}
176  DF  .~ By use of deflector arranged to bend work transversely of direction of work movement (e.g., troughing) {4}
179.~.~ Including complementary roller-couple {2}
180  DF  .~.~.~> Including plural, axially-spaced circumferential ribs and grooves
181  DF  .~.~.~> Including plural, successively-acting roller-couples

DEFINITION

Classification: 72/179

Including complementary roller couple:

(under subclass 176) Subject matter wherein the instrumentality includes two noncylindrical rollers disposed so that their axes lie in a common plane and work passes through (intersects) said plane between work-engaging surfaces of the rollers, and wherein, at that plane, the surface of one roller interfits (or tends to interfit) with the surface of the other roller.

(1) Note. The Figure accompanying this note illustrates one example of a complementary roller couple. [figure]