US PATENT SUBCLASS 269 / 60
.~.~ Screw means

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

55  DF  HOLDER MOUNTED FOR MOVEMENT {5}
58  DF  .~ Including means to shift holder position {4}
60.~.~ Screw means

DEFINITION

Classification: 269/60

(under subclass 58) Device in which the mechanism for moving the holder includes mating concentrically threaded elements which elements are relatively rotatable to cause relative axial movement of said elements which movement is imparted to said holder.