US PATENT SUBCLASS 269 / 176
.~.~.~.~.~ Common to spaced parallel screw means

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}
172  DF  .~.~ With relative axial shift of screw-nut actuating means {4}
173  DF  .~.~.~ Split nut type {2}
174  DF  .~.~.~.~ With separate means for lateral motion of segments {3}
176.~.~.~.~.~ Common to spaced parallel screw means

DEFINITION

Classification: 269/176

(under subclass 174) Device wherein the operative manipulated mechanism effects relative radial movement of segments coacting with both of a pair of threaded cylindrical actuating members, said 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:

219, for patents to a holder with spaced parallel screw means, either of which means serves as a common actuator for each of the coacting jaws.