US PATENT SUBCLASS 411 / 229
.~.~.~.~ Axially directed, resiliently biased detent means

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}
229.~.~.~.~ Axially directed, resiliently biased detent means

DEFINITION

Classification: 411/229

Axially directed, resiliently biased detent means:

(under subclass 223) Device wherein the internally threaded

elements are secured against relative rotation by spring urged, depressible protuberance means which are carried by one of the internally threaded elements and which are adapted to be received in recess means in the other such elements.