US PATENT SUBCLASS 411 / 313
.~ Washer having a deformable portion engageable with a threaded 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}
313.~ Washer having a deformable portion engageable with a threaded element {1}
314  DF  .~.~> Resiliently deformable portion

DEFINITION

Classification: 411/313

Washer having a deformable portion engageable with a threaded element:

(under subclass 190) Device wherein a washer element is provided having a portion which is bent or otherwise deformed into locking engagement with one of the threaded elements.

SEE OR SEARCH THIS CLASS, SUBCLASS:

201, for a coupled bolt and nut provided with one or more distinct member which restrict rotation by engaging at least one, more or less flat, radially outwardly facing surface of the internally threaded element, and wherein the member, or one of them, includes a region which is bent or otherwise reshaped, plastically, into engagement with such a surface, which member frequently is in the nature of a washer.