US PATENT SUBCLASS 72 / 458
.~ Comprising lever manipulated to force work


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

457  DF  BY OR WITH WORK-CONSTRAINER AND/OR MANIPULATED WORK-FORCER {3}
458.~ Comprising lever manipulated to force work {1}
459  DF  .~.~> With work-complementing tool-face adjacent to work-gripping clamp


DEFINITION

Classification: 72/458

Comprising lever manipulated to force work:

(under subclass 457) Implement wherein movement of one work portion (relative to another) is caused by a device having means for holding the work portion fixedly thereto and an elongated extension, which device is disclosed as moved by an operative grasping the extension.

(1) Note. It is not necessary for a work-holder to grip the work tightly. An element in frictional engagement with the work, whereby relative movement therebetween is restrained will fit the concept of this subclass.