US PATENT SUBCLASS 72 / 241.2
.~.~ Including back-up for roller

Current as of: June, 1999
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72 /   HD   METAL DEFORMING

199  DF  BY USE OF ROLLER OR ROLLER-LIKE TOOL-ELEMENT {17}
237  DF  .~ With carrier for roller-couple or tool-couple {9}
241.2.~.~ Including back-up for roller {4}
241.4  DF  .~.~.~> With means to relatively vary back-up force along roller axis {2}
242.2  DF  .~.~.~> Load bearing, equal size pair of back-up rolls {1}
243.2  DF  .~.~.~> Including reaction roll {1}
243.6  DF  .~.~.~> Irregular, convex or hollow back-up roll

DEFINITION

Classification: 72/241.2

Including back-up for roller:

(under subclass 237) Subject matter wherein at least one of the rollers of a roller-couple is supported against movement at right angles to the axis thereof by means located between the ends of the work-engaging surfaces of the rollers in contact therewith.

(1) Note. The roller engages the work and lies between the work and the back-up means. Pressure exerted by the work in resisting deformation is transmitted through the roller to the back-up means, rather than being wholly absorbed by the bearings of the roller.

SEE OR SEARCH THIS CLASS, SUBCLASS:

163, for disclosure of similar back-up means in deflecting roller structure.