US PATENT SUBCLASS 81 / 170
.~.~.~ Nontraveling rotatable 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}
170.~.~.~ Nontraveling rotatable screw {2}
171  DF  .~.~.~.~> Bracket-bearing
172  DF  .~.~.~.~> Spiral groove engaged by slidable actuator

DEFINITION

Classification: 81/170

An exteriorly-threaded device having no longitudinal movement is actuated to adjust the sliding part.