Pipes and tubular conduits – Flexible – Distinct layers
Reexamination Certificate
2006-07-04
2006-07-04
Brinson, Patrick (Department: 3754)
Pipes and tubular conduits
Flexible
Distinct layers
C138S114000, C138S149000, C138S127000, C138S124000, C138S125000
Reexamination Certificate
active
07069956
ABSTRACT:
A marina pipe includes a flexible conduit resistant to mechanical stresses, the conduit adapted to surround the secondarily contained flexible piping. The conduit comprises a metallic core and a thermoplastic jacket. The secondarily contained flexible piping comprises an inner supply pipe, wherein the inner pipe is comprised of a first, inner layer fabricated from nylon, a second, intermediate layer comprising a nylon reinforced wrap, and a third, outer layer comprising a polyethylene material, the nylon inner material, the nylon wrap and the polyethylene outer layer being extruded simultaneously to form the inner pipe. The secondarily contained flexible piping further comprises a flexible outer secondary containment pipe within which the inner supply pipe is carried, the outer pipe being fabricated from a fuel impervious material and having a plurality of radially projecting flanges disposed between the inner supply pipe and the outer secondary containment pipe, to provide a locking engagement of the pipes with respect to each other and to provide for a flow passage between the pipes. Adjacent to the outer flanged pipe is a fire resistant silica needle mat layer.
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Brinson Patrick
Young & Basile P.C.
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