US PATENT SUBCLASS 81 / 451
.~.~ With separate means for guiding or gripping work

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.~.~ With separate means for guiding or gripping work {3}
452  DF  .~.~.~> Having resilient, relatively movable, work gripping members {1}
454  DF  .~.~.~> Having pivoted, relatively movable, work gripping members {1}
456  DF  .~.~.~> Having member with work underlying portion {2}

DEFINITION

Classification: 81/451

With separate means for guiding or gripping work:

(under subclass 436) Wrench or screwdriver provided with means separate from its work-engaging and strain-exerting portion (i.e., the inserted and noninserted portion of the tool used to turn or twist the work) for contacting and guiding or gripping the work having strain exerted on it by the portion, in order to position the work relative to the portion during the straining operation.