US PATENT SUBCLASS 81 / 454
.~.~.~ Having pivoted, relatively movable, work gripping members


Current as of: June, 1999
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81 /   HD   TOOLS

52  DF  WRENCH, SCREWDRIVER, OR DRIVER THEREFOR {27}
436  DF  .~ Having work engaging and force exerting portion inserted into cavity (e.g., allen wrench, screwdriver) {10}
451  DF  .~.~ With separate means for guiding or gripping work {3}
454.~.~.~ Having pivoted, relatively movable, work gripping members {1}
455  DF  .~.~.~.~> With camming or wedging element for moving members


DEFINITION

Classification: 81/454

Having pivoted, relatively movable, work gripping members:

(under subclass 451) Gripping means having two or more relatively movable members which grip the work between their work-contacting surfaces, at least one of the members being pivotally attached to the tool.