US PATENT SUBCLASS 29 / 261
.~.~.~.~.~ Pivotal arms

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  DF  .~.~.~.~ Work-engager arms along or parallel to screw {3}
261.~.~.~.~.~ Pivotal arms

DEFINITION

Classification: 29/261

Pivotal arms:

(under subclass 259) Apparatus in which the arms are connected for pivotal movement to the nut or nut carrying frame.

SEE OR SEARCH THIS CLASS, SUBCLASS:

262, for pivotal grippers directly carried by the screw.