US PATENT SUBCLASS 72 / 296
.~.~ With coacting relatively movable tool

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

293  DF  BY USE OF NON-DEFORMING WORK-GRIPPING CLAMP AND RELATIVELY MOVABLE CLAMP, TOOL OR WORK-FORCER {9}
295  DF  .~ By individually non-deforming clamps {4}
296.~.~ With coacting relatively movable tool {1}
297  DF  .~.~.~> With means to actuate tool

DEFINITION

Classification: 72/296

With co-acting relatively movable tool:

(under subclass 295) Subject matter comprising a third instrumentality or the use of an instrumentality designed and intended to engage work with deforming force, and means effective to change the location of said third instrumentality with respect to two or more of said work-gripping instrumentalities, during an operation of the class type.

(1) Note. The third instrumentality may consist of a more conventional tool, e.g., a die or forming block against which work is drawn or wrapped while being maintained under tension by the clamps. Many such stretch-forming devices are included in this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

305, for spaced (e.g., fixed) clamps and relatively movable tool.

309, for a movable work clamp and coacting, relatively movable tool.

323, for a work clamp and plural coacting tools.

SEE OR SEARCH CLASS

269, Work Holders, 87+, for a work clamp combined with a tool couple element (such as a tool guide).