US PATENT SUBCLASS 411 / 248
.~.~.~.~ Split ring


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}
247  DF  .~.~.~ Resilient grip {1}
248.~.~.~.~ Split ring {1}
249  DF  .~.~.~.~.~> Including structure interfitting within a thread for less than a full turn thereof


DEFINITION

Classification: 411/248

Split ring:

(under subclass 247) Device wherein the locking member comprises a resilient element which defines the major portion, but less than all, of a normally closed figure such as an annulus or a polygon.

(1) Note. The break in the figure sometimes serves to facilitate assembly of the element with the threaded elements.