US PATENT SUBCLASS 411 / 215
.~.~.~ With an additional member between screw and axially outwardly facing portion

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}
214  DF  .~.~ Member includes screw receivable in an axially extending, internally threaded bore {1}
215.~.~.~ With an additional member between screw and axially outwardly facing portion

DEFINITION

Classification: 411/215

With an additional member between screw and axially outwardly facing portion:

(under subclass 214) Device provided with an additional member (e.g., an apertured plate, a washer, etc.) located in intervening relationship to the screw and the axially outwardly facing portion of the internally threaded element, thereby substituting for, or supplementing, the screw in engaging that portion.