Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1995-05-22
1997-05-06
Cuchlinski, Jr., William A.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277DIG10, F16J 1510
Patent
active
056263490
ABSTRACT:
A sealing ring for fitting between and sealing an annular space between a spigot end of a length of pipe and a bell-shaped 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 bell-shaped end during the formation of the pipe joint. A thin rupturable membrane of a thickness less than 0.008 inches is attached to the second surface about the circumference of the annular main body defining an annular cavity. A lubricant is disposed in the annular cavity, either between the second surface and the rupturable membrane or in an encapsulated cavity formed by the membrane whereby, when the spigot end and the bell-shaped end are slid into each other to form a pipe joint, the rupturable membrane is ruptured and the lubricant is released.
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Paleczny Anthony R.
Sutherland Ian B.
Beres John L.
Cuchlinski Jr. William A.
Fors Arne I.
N C Rubber Products Inc.
Rudolph John R.
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