US PATENT SUBCLASS 72 / 218
.~.~.~.~.~ With means to apply torque to movable tool


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}
214  DF  .~ Comprising tool movable relative to stationary work-portion during deformation {2}
215  DF  .~.~ Along a curved path {1}
216  DF  .~.~.~ About a fixed pivot {1}
217  DF  .~.~.~.~ Work between movable tool and pivot (e.g., sweep-arm bender) {2}
218.~.~.~.~.~ With means to apply torque to movable tool


DEFINITION

Classification: 72/218

With means to apply torque to movable tool:

(under subclass 217) Subject matter including means to turn the tool about its axis of rotation, wherein the turning force is exerted on the tool directly rather than through rolling engagement of the tool on the work.

(1) Note. In the typical disclosure of this subclass a roller is mounted on a pivotable arm or lever, and torque is

applied to the axle of the roller in addition to, or in substitution for, a force applied to the arm or lever.