US PATENT SUBCLASS 72 / 241.6
.~.~.~.~ Hydraulic or pneumatic force appliers spaced along roller axis


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  DF  .~.~ Including back-up for roller {4}
241.4  DF  .~.~.~ With means to relatively vary back-up force along roller axis {2}
241.6.~.~.~.~ Hydraulic or pneumatic force appliers spaced along roller axis


DEFINITION

Classification: 72/241.6

Hydraulic or pneumatic force appliers spaced along roller axis:

(under subclass 241.4) Subject matter wherein the provision of the back-up means to vary force transmitted thereby comprises a relatively movable cylinder and piston in which fluid or gas under pressure is placed.