US PATENT SUBCLASS 269 / 252
.~.~.~.~.~ Traveling means parallel to screw

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

86  DF  RELATIVELY MOVABLE JAWS {25}
216  DF  .~ Means to actuate jaw(s) (i.e., apply holding force) {10}
240  DF  .~.~ Screw-nut type {6}
246  DF  .~.~.~ Screw travels with jaw {4}
250  DF  .~.~.~.~ Means to keep faces parallel and/or translate jaw {2}
252.~.~.~.~.~ Traveling means parallel to screw {1}
253  DF  .~.~.~.~.~.~> Plural traveling elements coplanar with screw

DEFINITION

Classification: 269/252

(under subclass 250) Device wherein the movable means, to keep coacting work engaging surfaces from shifting angularly, moves in the same direction as the screw element along a separate but congruent path.