US PATENT SUBCLASS 411 / 211
.~.~.~.~ With a discrete, resilient 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}
209  DF  .~.~ Member includes key, screw, tongue, etc. perpendicular to threads {2}
210  DF  .~.~.~ Utilizing a resilient characteristic of the key, or of a discrete element {1}
211.~.~.~.~ With a discrete, resilient element

DEFINITION

Classification: 411/211

With a discrete, resilient element:

(under subclass 210) Device provided with a distinct element or device of a resilient nature for positioning or retaining the pin, wedge, clip, dog, etc.

(1) Note. Frequently, the distinct element is a coil spring.