US PATENT SUBCLASS 411 / 180
.~.~.~.~ Nut deforms wall of preformed opening in substructure during assembly


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

81  DF  THREADED FASTENER LOCKED TO A DISCREET STRUCTURE (E.G., PLATE, RAIL, WHEEL) {13}
172  DF  .~ Nut having a portion for attachment to substructure {2}
176  DF  .~.~ Fastener having a deformable portion or deforms substructure (e.g., prong) {3}
177  DF  .~.~.~ Nut assembled to substructure utilizing cooperating regions on both {5}
180.~.~.~.~ Nut deforms wall of preformed opening in substructure during assembly


DEFINITION

Classification: 411/180

Nut deforms wall of preformed opening in substructure during assembly:

(under subclass 177) Device wherein the substructure is provided with an aperture for the entry, in an axial direction, of the nut, or at least a portion of the axial dimension thereof, and wherein the substructure has a deformable region which comprises the periphery of the aperture, which periphery undergoes a change in configuration, radially, or axially, during or subsequent to the introduction of the nut thereinto.

(1) Note. The change in configuration may be, for example, (a) a shearing off of portions of the wall of the aperture by the forcing thereinto of a nut having a serrated, radially outwardly facing surface, or (b) a bending out, from the plane of the substructure, of the material surrounding the aperture (e.g., the substructure is a thin panel).

(2) Note. The aperture in the instance of a substructure of greater thickness than the axial dimension of the nut may have an enlarged portion for the entry of the nut and another smaller portion for the passage of the bolt shank.

(3) Note. It is not intended to include herein deformation of the substructure which takes place at a location removed from the periphery of the opening; e.g., by prongs or tangs depending from a radially outwardly extending flange formed on the nut.

SEE OR SEARCH THIS CLASS, SUBCLASS:

179, in regard to the reference to this subclass (180) appearing in (2) Note thereof.