US PATENT SUBCLASS 29 / 265
.~.~.~.~.~ Movable grippers on screw

Current as of: June, 1999
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29 /   HD   METAL WORKING

700  DF  MEANS TO ASSEMBLE OR DISASSEMBLE {55}
244  DF  .~ Puller or pusher means, contained force multiplying operator {11}
256  DF  .~.~ Having screw operator {2}
258  DF  .~.~.~ Central screw, work-engagers around screw {3}
263  DF  .~.~.~.~ Tubular or tube segment forms work-engager {2}
265.~.~.~.~.~ Movable grippers on screw

DEFINITION

Classification: 29/265

Movable grippers on screw:

(under subclass 263) Apparatus in which the tubular or tube segment form a work engager having at least two relatively movable parts to grip the work which parts are mounted on the work engaging end of the force developing screw.

(1) Note. The grippers may be pivotal, slidable, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:

262, for pivotal grippers on force developing screws not of tubular or tube segment form.

264, for similar devices threaded to engage threaded work.