Abstract: A combining device capable of being embedded into an object comprises: an embedding unit having a first end to be embedded into an embedded object and a second end having an elastic buckling means; a hollow coupling unit having an inner surface which is formed as a channel; wherein in assembly, the second end of the embedding unit is combined with a load and then the elastic buckling means is inserted into the channel of the hollow coupling unit so that the embedding unit is tightly engaged with the hollow coupling unit; and the first end is received in the embedded object so that the embedded object loading the weight of the load.

Abstract: The nail heads of a nail row respectively have two symmetrical oblique insert members respectively formed under the front and the rear side, and each oblique insert member has a horizontal plane and an inclined plane connected to each other. Between the horizontal plane and the flat striking portion of the nail head forms a preset thickness strong enough to resist striking. The inclined plane has its outer side edge connected with one side edge of the nail head to form a sharp nailing portion able to be smoothly nailed in a workpiece. The horizontal plane and the inclined plane are combined with the workpiece by mutual engagement, able to combine work pieces together with great stability and firmness.

Abstract: This invention relates to a fastener, which expands by the insertion of an expanding member, preferably a screw. The fastener comprises a substantially flat head and two expandable legs. The head has an upper side and a lower side, preferably separated by a gap. The head has also a hole on the upper side in which the screw engages. Further, the screw engages in other locations of a critical portion of the rest of the body of the fastener, thereby increasing considerably the prevailing torque required to render the screw loose, the pulling force required to break the fastener or otherwise pull the screw out of the engageable hole of the upper side of the head, as well as the stripping torque.

Abstract: A novel fastener for holding and spacing an object at a predetermined distance from a substrate comprises a bridge portion, a first prong extending in a driving direction from the bridge portion, and a second prong spaced from the first prong and extending generally parallel to the first prong in the driving direction from the bridge portion, wherein the second prong is substantially shorter than the first prong.

Abstract: A self-attaching female fastener having a generally cylindrical body including opposed annular ends, a bore extending through the annular ends of the body including an inclined frustoconical outer surface and a radial flange portion integral with the body midway between the opposed ends having parallel outer surfaces surrounding the body. The fastener is symmetrical about a plane perpendicular to the bore longitudinal axis. The parallel surfaces of the flange include radial grooves spaced from the body and the outer surface of the flange is tapered inwardly to a rounded outer edge. The installation method includes receiving either end of the body through an opening in the panel, which may be pierced by the annular end, deforming the annular outer periphery of the flange toward the end of the body received through the panel opening forming an annular groove surrounding the body and deforming an annular portion into the annular groove.

Abstract: An adjustable nut comprises a main body having an axial passageway and a locking insert. First and second wing members are pivotally mounted to the main body, whereby the wing members include respective cam surfaces that deflect the inner surface of the locking insert toward the threaded shaft. The assembly provides three different mounting arrangements. The first and second wing members are adapted to provide (1) a locking position where the main body is immovably locked to the threaded shaft, (2) an adjustment position where the first wing member is in the locking position and the second wing member is in an unlocking position to permit selective adjustment of the main body with respect to the threaded shaft, and (3) a sliding position where the first and second wing members are in an unlocking position to permit the main body to slide axially along the threaded member.