Universal tubular connection having a variable metal-to-metal seal width corresponding to material yield strength
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United States of America Patent
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-
Apr 4, 1989
Grant Date -
N/A
app pub date -
Dec 28, 1987
filing date -
Dec 28, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The same size and weight of tubular products, but in different grades of material, are made for universal connection but with seal areas that differ appropriately for adequate sealing without overstressing the connection members for the pressures encountered where each tubular length is put in service. The angle of the conically tapered seal on all box members is made the same for all grades of the products. The pin member of medium grade is made with an equal length seal area and adjacent contracting area on its forward end. The pin member of lower grade is made with a shorter length seal area than its adjacent contacting area, thereby also placing the seal area further from the pin member distal end. This stiffens the pin member. The pin member of higher grade is made with a longer length seal area than its adjacent contacting area.
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