Pipe joints or couplings – Molded joint – Interlocked
Reexamination Certificate
2005-03-24
2008-03-11
Bochna, David (Department: 3679)
Pipe joints or couplings
Molded joint
Interlocked
C285S399000, C285S403000, C285S023000
Reexamination Certificate
active
07341285
ABSTRACT:
A pipe joint for joining pipes having a low surface energy and resistance to solvents. The components are an extrudable adhesive; a first pipe having a socket with an inside diameter, where the socket has a mouth, a self-centering bottom, and a cylindrical wall with an inlet, an outlet, and an inner annular channel; a second pipe having an insertion section with an end and an outer annular channel, where the second pipe has an outside diameter that is less than the inside diameter of the socket, the difference in diameters defining a gap and an interlocking keyway; and a flanged annular ring. The annular ring has an inside diameter that enables it to be slid over the second pipe and a thickness that is comparable to the gap. When the adhesive cures it forms a mechanical key. The adhesive is preferably an alkyl borane adhesive.
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U.S. Appl. No. 10/564,590.
Brockington F. Rhett
IPS Corporation Weld-On Division
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