US PATENT SUBCLASS 411 / 253
.~.~.~ Gripping member includes a tapered section adapted to be axially depressed to cause radial movement of a portion thereof

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}
253.~.~.~ Gripping member includes a tapered section adapted to be axially depressed to cause radial movement of a portion thereof

DEFINITION

Classification: 411/253

Gripping member includes a tapered section adapted to be axially depressed to cause radial movement of a portion thereof:

(under subclass 246) Device wherein the locking member is formed with an axially extending portion which is inclined with respect to the axis of the threaded elements and wherein a free end of said portion is caused to be moved into engagement with the thread on one of the threaded elements upon the application of an axially directed force to said portion.

(1) Note. The tapered section may include inwardly directed tang means.