US PATENT SUBCLASS 81 / 445
.~.~.~.~.~ With threaded surface for cooperating with mating tool structure

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}
442  DF  .~.~ Inserted portion having relatively movable components {3}
443  DF  .~.~.~ Having camming or wedging element for moving components {2}
444  DF  .~.~.~.~ Axially shiftable element located between and wedging against components {1}
445.~.~.~.~.~ With threaded surface for cooperating with mating tool structure

DEFINITION

Classification: 81/445

With threaded surface for cooperating with mating tool structure:

(under subclass 444) Camming or wedging element wherein at least a portion of the element is provided with a threaded surface which cooperates with mating threaded structure formed on the contacted surface of at least one of the inserted components or on another portion of the tool.