US PATENT SUBCLASS 269 / 219
.~.~.~ Spaced parallel screw means

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}
218  DF  .~.~ With common means for each of coacting jaws {1}
219.~.~.~ Spaced parallel screw means {1}
220  DF  .~.~.~.~> With specific means for angular positioning of jaws

DEFINITION

Classification: 269/219

(under subclass 218) Device wherein the single means is either of two threaded cylindrical members which members lie in the plane of relative jaw movement, generally normal to and at different distances from the work engaging surfaces of the jaws.

SEE OR SEARCH THIS CLASS, SUBCLASS:

237, for patents to a holder with pivoted jaws.

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