US PATENT SUBCLASS 411 / 265
.~.~ Including a tapered (e.g., a conical) surface for wedging the internally threaded element against the externally threaded one

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}
265.~.~ Including a tapered (e.g., a conical) surface for wedging the internally threaded element against the externally threaded one {1}
266  DF  .~.~.~> Segmented internally threaded element {3}

DEFINITION

Classification: 411/265

Including a tapered (e.g., conical) surface for wedging the internally threaded element against the externally threaded one:

(under subclass 259) Device wherein the rotation restricting means includes a surface which extends at an acute angle to the longitudinal axis of the threaded elements, which surface is engaged by the internally threaded element in such a manner that movement on the part of that element causes it to be forced into ever-tighter engagement with the externally threaded element.

(1) Note. The surface is usually one of revolution, such as a cone, and may be either interrupted (i.e., a segmented cone) or continuous.

(2) Note. The surface most often is smooth, but is, in some instances, threaded.

SEE OR SEARCH THIS CLASS, SUBCLASS:

237, for a coupled bolt and nut which includes a rotation restricting member which coacts with the axially outwardly facing portion of the internally threaded element, and wherein that member is an additional internally threaded element, and further wherein there is included a means to restrict the rotation of one internally threaded element relative to the other one, and additionally wherein the latter means comprises the extending of a portion of one of the elements into a recess of the other element, which portion and recess, it may be observed, sometimes involve a

conical interface.