US PATENT SUBCLASS 74 / 509
.~.~.~.~ Screw and nut

Current as of: June, 1999
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74 /   HD   MACHINE ELEMENT OR MECHANISM

469  DF  CONTROL LEVER AND LINKAGE SYSTEMS {8}
491  DF  .~ Hand operated {4}
504  DF  .~.~ Rotatable rod, shaft, or post {5}
507  DF  .~.~.~ Gear {2}
509.~.~.~.~ Screw and nut

DEFINITION

Classification: 74/509

(under subclass 507) Devices in the form of screw and nut gearing used for transmitting force and motion from the rotatable control member to the controlled linkage.