US PATENT SUBCLASS 81 / 478
.~.~ Work engaging portion pivotally or rotatably connected to handle

Current as of: June, 1999
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81 /   HD   TOOLS

52  DF  WRENCH, SCREWDRIVER, OR DRIVER THEREFOR {27}
467  DF  .~ Responsive to torque on work {7}
478.~.~ Work engaging portion pivotally or rotatably connected to handle {3}
479  DF  .~.~.~> With electric signal device
480  DF  .~.~.~> Axis of connection coaxial to rotational axis of work {2}
483  DF  .~.~.~> With arm extending from portion and through connection

DEFINITION

Classification: 81/478

Work engaging portion pivotally or rotatably connected to handle:

(under subclass 467) Wrench or screwdriver in which the work-engaging portion is pivotally or rotatably connected to a hand-powered structural member which transmits force to it, the portion pivoting or rotating relative to the member when the selected torque is exceeded.