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

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.