US PATENT SUBCLASS 81 / 153
.~.~.~ Roller clutch

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}
150  DF  .~.~ Shank grip {4}
153.~.~.~ Roller clutch

DEFINITION

Classification: 81/153

The traveling jaw is locked by gripping or clutching action of a roller upon the shank.