Threaded fastener

A threaded fastener has a substantially single helical thread formed upon a shank portion (12) thereof, and a plurality of substantially saw-blade type or serrated teeth (30) are formed upon crest portions of leading ones of individual thread portions of the helical thread (22). The saw-blade type o...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	CHEN, CHIN-TSAI, KRAM, GUENTHER REINHARD
Format:	Patent
Sprache:	eng ; fre ; ger
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 threaded fastener has a substantially single helical thread formed upon a shank portion (12) thereof, and a plurality of substantially saw-blade type or serrated teeth (30) are formed upon crest portions of leading ones of individual thread portions of the helical thread (22). The saw-blade type or serrated teeth cut into ride wall portions of any one of a multiplicity of substrates so as to substantially reduce required insertion torque levels, render fastener insertion operations quicker, and enhance fastener pull-out resistance values.