US PATENT SUBCLASS 81 / 482
.~.~.~.~ With pivoted locking pawl

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  DF  .~.~ Work engaging portion pivotally or rotatably connected to handle {3}
480  DF  .~.~.~ Axis of connection coaxial to rotational axis of work {2}
482.~.~.~.~ With pivoted locking pawl

DEFINITION

Classification: 81/482

With pivoted locking pawl:

(under subclass 480) Wrench or screwdriver provided with a pawl structurally distinct from both the portion and the member and pivotally connected to one of them and releasably locking with the surface of the other to prevent relative angular movement below the selected torque.