Pipe joints or couplings – With lubrication
Patent
1996-04-24
1998-07-21
Arola, Dave W.
Pipe joints or couplings
With lubrication
285334, F16L 700
Patent
active
057825033
ABSTRACT:
The threaded joint for tubes according to the invention concerns sealed end to end connections of metal tubes useable in particular in the petroleum industry. This joint comprises a sleeve provided with two housings with tapered threads into which are screwed the male extremities of two metal tubes provided with corresponding threads having non-threaded extremity zones the front walls of which abut one against the other, a clearance existing between the lateral walls of these zones and the annular wall of he sleeve opposite. Two pairs of male/female shoulder stops prevent over-screwing. The heights of the teeth of the male and female threads are identical.
Narita Akira
Noel Thierry
Arola Dave W.
Sumitomo Metal Industries
Vallourec Oil & Gas
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