THREADED CONNECTION WITH IMPROVED ROOT THREAD PROFILE

THREADED CONNECTION WITH IMPROVED ROOT THREAD PROFILE

A threaded connection design having a double ellipse in the thread root for reducing stress fatigue is illustrated in this disclosure. The root groove (103) includes a first portion comprising a first elliptical surface (106) being part of a first ellipse (107). The root groove (103) further include...

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Bibliographische Detailangaben
Hauptverfasser: AGUILAR, ARMENDARIZ, RAMON ALBERTO, MAZZAFERRO, GASTON MAURO, AMATO, STEFANO, COPPOLA, TOMMASO, DARCIS, PHILIPPE PIERRE
Format: Patent
Sprache:eng
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Zusammenfassung:A threaded connection design having a double ellipse in the thread root for reducing stress fatigue is illustrated in this disclosure. The root groove (103) includes a first portion comprising a first elliptical surface (106) being part of a first ellipse (107). The root groove (103) further includes a second portion comprising a second elliptical surface (108), being part of a second ellipse (110), and the second elliptical surface (108) being joined tangentially at a first end to the first elliptical surface (106) at a junction point (109) that defines the bottom of the root groove (103). The second elliptical surface (108) is joined tangentially at a second end to the load flank (150). Figure 1.