Device for determining when a threaded tube joint with screw limiting stop is properly made up
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United States of America Patent
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Dec 20, 1988
Issued Date -
N/A
app pub date -
Aug 27, 1987
filing date -
Oct 8, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device for determining when a threaded joint for steel tubes having a male element (1) with external threads (3) with a screw limiting stop (5), and a female element (2) with corresponding internal threads (4) and a corresponding screw limiting stop (6) is properly made up is provided. The device comprises a strain gauge (12) and means (10, 11) for applying said gauge on the external surface of the female element (2) such that the gauge can measure superficial deformations of the female element (2) in the longitudinal direction along one of the generatrix of the female element.
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