US PATENT SUBCLASS 411 / 190
HAVING STRUCTURE TO RESTRICT ROTATION OF THREADED, MATING PIECES (E.G., NUT LOCK)

Current as of: June, 1999
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411 /   HD   EXPANDED, THREADED, DRIVEN, HEADED, TOOL-DEFORMED, OR LOCKED-THREADED FASTENER

190HAVING STRUCTURE TO RESTRICT ROTATION OF THREADED, MATING PIECES (E.G., NUT LOCK) {13}
191  DF  .~> Structure contacts nut piece side and is fixed to the nut {3}
204  DF  .~> Structure is coaxial, distinct member (e.g., washer, key, or nut portion) that restricts nut piece {7}
257  DF  .~> Including material in the nature of (1) a metallic coating, (2) a quantity of fusible metal or (3) a discrete member formed of ductile metal
258  DF  .~> Including settable material
259  DF  .~> Comprising a thread lock {18}
313  DF  .~> Washer having a deformable portion engageable with a threaded element {1}
315  DF  .~> With a member in the nature of a rotation preventing key movable laterally into engagement with the threaded elements {2}
321  DF  .~> With an elongated member in the nature of a rotation preventing key disposed axially of the threaded elements {2}
324  DF  .~> Elastic gripping action
325  DF  .~> Externally threaded element includes an axially extending opening in its free end for receiving an expander member
326  DF  .~> Pawl and ratchet {2}
332  DF  .~> Including teeth of the ramp and buttress type on the axially inwardly facing portion of the internally threaded element
333  DF  .~> By deformation of a threaded element {1}

DEFINITION

Classification: 411/190

HAVING STRUCTURE TO RESTRICT ROTATION OF THREADED, MATING PIECES (E.G., NUT LOCK):

(under the class definition) Device wherein an externally threaded element and an internally threaded element are matingly engaged through the medium of their threads, and wherein means is provided to restrict (i.e., limit or prevent) the rotation, in at least the unthreading direction, of one element relative to the other.

(1) Note. The means may range from as much as a plurality of discrete members to as little as the configuration of the thread of one of the elements; in the case of a plurality of such members, only one of the members may be directly involved in the restriction of rotation, the other, or others, often serving only an auxiliary function (e.g., retaining the one in its operative position).

(2) Note. Infrequently, the internally threaded element consists of at least two, more or less distinct, cooperating parts (e.g., an inner, internally threaded sleeve and, interengaged in some manner therewith, an outer shell, the latter ordinarily having flat surfaces for engagement by a wrench), in which instance the mating, threaded engagement required for this subclass is considered to be that of the inner part of the composite internally threaded element with the externally threaded element.

(3) Note. Classification in this and the indented subclasses is not precluded by the absence of a combination of the two threaded elements, as long as it is clear that the coupling means is intended for use with such a combination.

SEE OR SEARCH THIS CLASS, SUBCLASS:

81+, for a threaded fastener (i.e., a bolt or nut) and means for restricting the rotation thereof relative to a coacting substructure.

166, in regard to the discussion therein of a peculiar kind of art for which classification in both areas 166+ and 190+ should be considered.