US PATENT SUBCLASS 411 / 281
.~.~.~.~ Of circumferentially spaced areas of continuous periphery

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}
259  DF  .~ Comprising a thread lock {18}
276  DF  .~.~ Having the internally threaded element distorted {2}
277  DF  .~.~.~ Radially inward distortion {3}
281.~.~.~.~ Of circumferentially spaced areas of continuous periphery {2}
282  DF  .~.~.~.~.~> Defining a smooth curving, noncircular thread section (e.g., elliptically shaped)
283  DF  .~.~.~.~.~> Impacted areas {1}

DEFINITION

Classification: 411/281

Of circumferentially spaced areas of continuous periphery:

(under subclass 277) Device wherein the internally threaded element is deformed inwardly at locations spaced about an uninterrupted periphery thereof.