US PATENT SUBCLASS 411 / 256
.~.~.~ Gripping member is moved tangentially into engagement with the threads

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}
246  DF  .~.~ By thread-gripping locking element {5}
256.~.~.~ Gripping member is moved tangentially into engagement with the threads

DEFINITION

Classification: 411/256

Gripping member is moved tangentially into engagement with the threads:

(under subclass 246) Device wherein the locking member assumes a holding position by being moved into engagement with the threaded element along a path which lies in planes both perpendicular and parallel to the axis of said element.