US PATENT SUBCLASS 269 / 241
.~.~.~ Differentially threaded

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}
241.~.~.~ Differentially threaded

DEFINITION

Classification: 269/241

(under subclass 240) Device wherein at least one portion of a threaded actuating means is provided with a lead or a pitch smaller or greater than another portion.

(1) Note. Rotation of such actuation means thus imparts axial movement of varying degrees to coacting mating elements.