US PATENT SUBCLASS 72 / 170
.~.~ Including three concurrently-acting delta-arranged deflector elements

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.~.~ Including three concurrently-acting delta-arranged deflector elements {3}
171  DF  .~.~.~> And additional work-deflecting or work-constraining element
172  DF  .~.~.~> Comprising two rollers and guide
173  DF  .~.~.~> Including adjustable element {2}

DEFINITION

Classification: 72/170

Including three concurrently acting delta-arranged deflector elements:

(under subclass 166) Subject matter wherein the instrumentality comprises an integrated assemblage of three (or more) members acting at the same time on the moving work,

wherein two members are located so as to be spaced along one side of the course of work movement and a third member is located on another side of said course.

(1) Note. Included in this and indented subclasses are patents disclosing such exemplary roller arrangements as those known in the art as "pyramid" rollers, illustrated in Figure 1 accompanying this note, and those known in the art as "pinch" rollers, illustrated in Figure 2 accompanying this note. The difference between the two exemplary arrangements is, as illustrated, the spacing between rollers. In view of the fact that few patents claim this different spacing no subclasses based upon this difference have been established. In either of these arrangements the "downstream" roller may be replaced by a plate, block, or other similar member which the work engages and on which it slides, as illustrated in Figure 3 accompany this note. Patents disclosing structure similar to this illustration (Figure 3) will be found in subclass 172 below. [figure] [caption]Figure 1 [figure] [caption]Figure 2 [figure] [caption]Figure 3