THREADED TUBULAR ELEMENT FOR FATIGUE RESISTANT THREADED TUBULAR JOINT AND RESULTING THREADED TUBULAR JOINT

The threading of a threaded tubular element includes at least one tangential multiple radius junction zone at the thread root, in particular on the load flank side. This zone include a principal arc with a radius where the support circle cuts the flank at a point. The tangent to this circle makes a...

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Bibliographische Detailangaben
1. Verfasser:	VERDILLON, LIONEL
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING PIPES SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	The threading of a threaded tubular element includes at least one tangential multiple radius junction zone at the thread root, in particular on the load flank side. This zone include a principal arc with a radius where the support circle cuts the flank at a point. The tangent to this circle makes a strictly positive angle with the flank. The secondary arcs have lower radii that effect the tangential junction of the principal arc on one side to the flank and on the other side to the thread root. The radius of the principal are larger than that of the standard circle which passes through and which would alone constitute a tangential junction zone. Such a threaded element provides a threaded tubular connection which incorporates good resistance to both static and cyclic stresses.