Pipe joints or couplings – Molded joint – Interlocked
Reexamination Certificate
2006-09-19
2006-09-19
Hewitt, James M. (Department: 3679)
Pipe joints or couplings
Molded joint
Interlocked
C285S290100, C285S290400, C285S331000, C285S903000, C285S399000, C285S288500, C285S288600
Reexamination Certificate
active
07108294
ABSTRACT:
A plastic coupling for joining two metal pipe sections end-to-end to form a pipe assembly. A first plastic spigot cuff is formed along the periphery of the end of the first pipe and a mating second plastic bell cuff is formed along the periphery of the end of the second pipe, such that the first and second cuffs form a bell and spigot joint with the first, spigot cuff inserted into and joined to the second, bell cuff.
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Freitas Daniel D.
Miller Robert F.
Dalton Philip A.
Hewitt James M.
Pacific Roller Die Company, Inc.
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