FLOW DRILL SCREW AND TIP CONFIGURATION

A screw includes a head portion, an externally threaded shank extending from the head portion, the externally threaded shank having an external surface, and a flow-hole-forming tip disposed at a distal end portion of the externally threaded shank. The flow-hole-forming tip includes a radiused lower...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Dornik, Nicholas, Huff, Garret Sankey, Crockett, Stephen J, Freis, Amanda Kay, Ruszkiewicz, Brandt J
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A screw includes a head portion, an externally threaded shank extending from the head portion, the externally threaded shank having an external surface, and a flow-hole-forming tip disposed at a distal end portion of the externally threaded shank. The flow-hole-forming tip includes a radiused lower zone having an external surface tangent to the external surface of the externally threaded shank, a conical middle zone having an external surface tangent to the external surface of the radiused lower zone, the conical middle zone defining a vertex angle, and a radiused distal end zone having an external surface tangent to the external surface of the conical middle zone. The flow-hole-forming tip includes a width of the flow-hole-forming tip is greater than a length of the flow-hole-forming tip and/or the vertex angle is greater than or equal to 90 degrees.