Threaded joint for steel pipes containing a sealing device located at the level of the threading
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United States of America Patent
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May 9, 1989
Grant Date -
N/A
app pub date -
May 6, 1987
filing date -
Sep 12, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A threaded joint for steel pipes useable in particular for the petroleum industry is provided. The joint is formed by threaded male and female elements wherein one part of the thread of a first element is strongly applied against the thread of the other element. One of the elements contains a groove having a length of at least one thread pitch and a depth greater than the height of the threads. A sealing device is provided in the groove consisting of a synthetic lining whose volume and shape essentially correspond to the volume and shape of the play that would exist between the threads of the elements.
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