US PATENT SUBCLASS 29 / 259
.~.~.~.~ Work-engager arms along or parallel to 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}
259.~.~.~.~ Work-engager arms along or parallel to screw {3}
260  DF  .~.~.~.~.~> With arm connecting engaging means
261  DF  .~.~.~.~.~> Pivotal arms
262  DF  .~.~.~.~.~> Pivotal grippers on screw

DEFINITION

Classification: 29/259

Work-engager arms along or parallel to screw:

(under subclass 258) Apparatus in which the side engagers comprise arms extending along or parallel with the screw, the arms having engagement with the screw nut or nut carrying frame at one end and engagement with an article part at the other end.