US PATENT SUBCLASS 81 / 156
.~.~.~ Displaceable half nut

Current as of: June, 1999
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81 /   HD   TOOLS

52  DF  WRENCH, SCREWDRIVER, OR DRIVER THEREFOR {27}
129  DF  .~ Slidable jaw adjustments {3}
155  DF  .~.~ Thread {10}
156.~.~.~ Displaceable half nut

DEFINITION

Classification: 81/156

The nut is made of sections which move away from the screw or of a single section which partially surrounds the screw and moves away from the screw in order to make a quick adjustment.