Mechanical joint gripping gasket

F - Mech Eng,Light,Heat,Weapons – 16 – L

Patent

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Details

F16L 21/025 (2006.01) F16J 15/10 (2006.01)

Patent

CA 2547046

A novel gasket includes at least one gripping element embedded in an annular member for forming a seal between two tubulars. For tubulars having socket and spigot ends, the gripping element includes teeth for gripping an outer surface of the spigot end and a blunt nose for contacting a front wall of a gland that compresses the gasket against surfaces of the socket and spigot ends. The blunt nose rolls along the front wall of the gland during relative movement between the tubulars and can include a contacting face of a specialized geometry to adjust contact dynamics and/or roughened surfaces to increase the frictional contact between the blunt nose and the front wall. The gripping elements can also include at least four teeth arranged such that no more than two teeth normally grip the outer surface of the spigot end. One or more teeth can also include a transverse groove to enhance penetration into the outer surface of the spigot end.

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