US PATENT SUBCLASS 411 / 255
.~.~.~.~ Including discrete means to move or to lock the gripping member relative to the externally threaded element

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}
254  DF  .~.~.~ Gripping member is moved radially into engagement with the threads {1}
255.~.~.~.~ Including discrete means to move or to lock the gripping member relative to the externally threaded element

DEFINITION

Classification: 411/255

Including discrete means to move or to lock the gripping member relative to the externally threaded element:

(under subclass 254) Device wherein an additional element is provided which either moves the locking member to cause it to grip the externally threaded element, or secures it in that position, or both.

(1) Note. The means is sometimes applied by moving it in an axial direction.