US PATENT SUBCLASS 72 / 172
.~.~.~ Comprising two rollers and guide

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}
170  DF  .~.~ Including three concurrently-acting delta-arranged deflector elements {3}
172.~.~.~ Comprising two rollers and guide

DEFINITION

Classification: 72/172

Comprising two rollers and guide:

(under subclass 170) Subject matter wherein the three members consist of two rollers* and a third, passive member, which is not a roller, engaging and acting on the work, while remaining stationary.

(1) Note. Excluded from this subclass are patents disclosing the third member to be a roller* rotatable about its axis. Such patents will be found elsewhere, for example, in subclass 170.

(2) Note. For an illustration of the type of structure found in this subclass, see Figure 3 accompanying (1) Note of subclass 170.