F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
F16L 21/02 (2006.01) F16J 15/10 (2006.01) F16L 21/035 (2006.01) F16L 23/22 (2006.01)
Patent
CA 2449329
A sealing ring for fitting between and sealing an annular space between a spigot end of a length of pipe and a socket end of another length of pipe which are slid into each other to form a pipe joint. The sealing ring comprises an annular main body having a first surface for engaging the spigot end and a second surface for engaging the socket end during the formation of the pipe joint. A thin flexible membrane of a thickness of 0.045 inches or less is attached to the second surface about the circumference of the annular main body defining an annular cavity. The flexible membrane is of a greater dimension than the length of the second surface in the general direction of pipe movement. A lubricant is disposed in the annular cavity between the second surface and the thin flexible membrane whereby, when the spigot end and the socket end are slid into each other to form a pipe joint, the thin flexible membrane slides relative to the second surface without rupturing.
Gowling Lafleur Henderson Llp
Sutherland Bruce
LandOfFree
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