Pipe joints or couplings – Deformed – By separate deformable element
Patent
1998-10-16
1999-09-28
Nicholson, Eric K.
Pipe joints or couplings
Deformed
By separate deformable element
285343, F16L 1908
Patent
active
059575093
ABSTRACT:
A pipe coupling for joining separate segments of pipe together in a fluid tight manner. A connector is fixedly secured to one pipe section with a retaining nut being removably mounted on the remaining pipe section. A retaining nut is threadably secured to a spool section with this spool section being threadably secured to the connector. In between the retaining nut and the pipe section there is located a grab ring. This grab ring includes a plurality of biting members. The grab ring can either constitute a split ring or can comprise an annular base ring which is fixed in size which has a plurality of deflectable settings mounted thereon. When the spool section is tightened, the retaining nut and the connector move closer together with an inclined configuration of wedge ring being forced to cause the grab ring to move toward the pipe section on which it is mounted with the biting members imbedding into the wall surface of the pipe section thereby longitudinally fixing the position of the pipe section relative to the retaining nut and maintaining a fluid tight relationship.
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Munro Jack C.
Nicholson Eric K.
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