US PATENT SUBCLASS 411 / 224
.~.~.~.~ Key received in part in each of the nuts

Current as of: June, 1999
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411 /   HD   EXPANDED, THREADED, DRIVEN, HEADED, TOOL-DEFORMED, OR LOCKED-THREADED FASTENER

190  DF  HAVING STRUCTURE TO RESTRICT ROTATION OF THREADED, MATING PIECES (E.G., NUT LOCK) {13}
204  DF  .~ Structure is coaxial, distinct member (e.g., washer, key, or nut portion) that restricts nut piece {7}
222  DF  .~.~ Internally threaded locking member (e.g., jam nut) {1}
223  DF  .~.~.~ Including means associated with at least one of the nuts for restricting rotation therebetween {11}
224.~.~.~.~ Key received in part in each of the nuts {2}
225  DF  .~.~.~.~.~> Including a plastically deformable portion
226  DF  .~.~.~.~.~> Received in axially extending passages or recesses

DEFINITION

Classification: 411/224

Key received in part in each of the nuts:

(under subclass 223) Device wherein the means comprises a distinct member, such as a pin, a portion of which resides in each of the internally threaded elements.