THREADED ELEMENT OF PART WITH OPPOSITE THREAD PARTS AND APPROPRIATE PIPE THREADED JOINT Russian patent published in 2012 - IPC E21B17/42 F16L15/02

Abstract RU 2454525 C2

FIELD: construction.

SUBSTANCE: threaded element (EM; EF) of a part (T2; T1) comprises a free end (EL2; EL1) and at least the first (FE1; FI1) and second (FE2; FI2) parts of thread, every of which includes thread turns (TH1, TH2). At the same time the specified first part of thread (FE1; FI1) is closer to the specified free end (EL2; EL1), and the specified second part of thread (FE2; FI2) is closer to the central part without thread (PC2; PC1) in the part (T2; T1). Support faces (FS) and bearing faces (FL) of thread turns (TH1) in the specified first part of thread (FE1; FI1) and thread turns (TH2) in the specified second part of thread (FE2; FI2) are inclined oppositely in respect to the radial direction.

EFFECT: solution to a problem of variable axial stretching and compressing loads between two running-off threaded elements.

21 cl, 11 dwg

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RU 2 454 525 C2

Authors

Gillot Laurent

Verger

Tartar Olivier

Dates

2012-06-27—Published

2008-06-10—Filed