US PATENT SUBCLASS 269 / 189
.~.~.~ Screw-nut type

Current as of: June, 1999
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269 /   HD   WORK HOLDERS

86  DF  RELATIVELY MOVABLE JAWS {25}
165  DF  .~ Means for direct manual adjustment of jaw(s) {5}
188  DF  .~.~ With common means to both lock and actuate jaw(s) {4}
189.~.~.~ Screw-nut type {2}
190  DF  .~.~.~.~> With wedge means in the lock mechanism {2}
194  DF  .~.~.~.~> Pawl-rack adjustment lock {1}

DEFINITION

Classification: 269/189

(under subclass 188) Device wherein the actuating means includes mating concentric threaded elements, which elements are relatively rotatable to cause relative axial movement of said elements which movement is imparted to associated jaws.

SEE OR SEARCH THIS CLASS, SUBCLASS:

172+, for patents to a holder adjustable by relative axial

shift of threaded actuating elements and which actuating means may also effect an adjustment-lock.

240+, for patents to a holder with screw-nut type actuating means, per se.