Pipe joints or couplings – Packed – Wedge
Reexamination Certificate
2011-03-08
2011-03-08
Hewitt, James M (Department: 3679)
Pipe joints or couplings
Packed
Wedge
C285S348000, C285S382700
Reexamination Certificate
active
07900976
ABSTRACT:
A coupling device includes a coupling body and a collar adapted to engage a tubular member in a permanent swaged connection. The coupling device includes axially spaced front and back ferrules which engage during swaging to provide a plurality of seals intermediate the ferrules and the tubular member as well as the coupling body. The back ferrule includes a central region having a generally cylindrical wall that is elastically/plastically deformed to a corrugated tube-like shape during swaging to enhance the maintenance of the seals. A portable installation tool for swaging the coupling body and collar to the tubular member is hydraulically actuated.
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Hewitt James M
Insight Engineering Services, Inc.
Pearne & Gordon LLP
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