Pipes and tubular conduits – Flexible – Spirally wound material
Reexamination Certificate
2011-08-23
2011-08-23
Brinson, Patrick F (Department: 3754)
Pipes and tubular conduits
Flexible
Spirally wound material
C138S130000, C138S123000, C138S125000, C138S172000, C138S137000
Reexamination Certificate
active
08001997
ABSTRACT:
A spoolable pipe is disclosed, the spoolable pipe having an internal pressure barrier formed about a longitudinal axis, and a reinforcing layer(s) enclosing the internal pressure barrier. In one embodiment, the reinforcing layer(s) can include fibers having at least a partial helical orientation about approximately thirty and about approximately seventy degrees relative to the longitudinal axis, and, the wall can include at least one external layer enclosing the reinforcing layer(s) and having a permeability at least ten times greater than the permeability of the internal pressure barrier. The reinforcing layer(s) can further include a coating. The pipe can also include an energy conductor(s) integrated with and/or located between the internal pressure barrier and/or the reinforcing layer(s).
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Wideman Thomas
Brinson Patrick F
Fiberspar Corporation
Goodwin & Procter LLP
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