US PATENT SUBCLASS 81 / 157
.~.~.~ Displaceable nut or screw

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}
157.~.~.~ Displaceable nut or screw {1}
158  DF  .~.~.~.~> Traveling screw, shank rack

DEFINITION

Classification: 81/157

The nut or screw is separated bodily from its cooperating member to provide a quick adjustment.

SEE OR SEARCH THIS CLASS, SUBCLASS:

36, and 137.