US PATENT SUBCLASS 411 / 303
.~.~.~.~ Disposed in a counterbore in the internally 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}
259  DF  .~ Comprising a thread lock {18}
301  DF  .~.~ Elastic gripping action {1}
302  DF  .~.~.~ Elastic insert {2}
303.~.~.~.~ Disposed in a counterbore in the internally threaded element

DEFINITION

Classification: 411/303

Disposed in a counterbore in the internally threaded element:

(under subclass 302) Device wherein the elastomeric material is carried in a circumferentially extending counterbore which is concentric with the threaded bore of the internally threaded element.