US PATENT SUBCLASS 411 / 198
.~.~.~ Utilizing a resilient characteristic of the member, or of a discrete 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}
191  DF  .~ Structure contacts nut piece side and is fixed to the nut {3}
197  DF  .~.~ Structure is coaxial, distinct member (e.g., washer) that restricts nut piece when fixed {3}
198.~.~.~ Utilizing a resilient characteristic of the member, or of a discrete element {1}
199  DF  .~.~.~.~> Member comprises key movable laterally into engagement with threaded elements

DEFINITION

Classification: 411/198

Utilizing a resilient characteristic of the member, or of a discrete element:

(under subclass 197) Device wherein either (a) an inherent property of resiliency on the part of at least one of the distinct members or (b) the presence of a distinct element having such a capability, is relied upon for either (1) moving the distinct member into or from its rotation restricting position or (2) keeping the distinct member from becoming separated from its operative association with one or the other of the threaded elements.