Pipes and tubular conduits – Distinct layers
Patent
1995-12-26
1999-08-31
Brinson, Patrick
Pipes and tubular conduits
Distinct layers
138137, 138141, 138DIG9, 138DIG7, F16L 914
Patent
active
059440600
ABSTRACT:
The composite duct system includes a first, duct portion; a second, duct foam portion; and, a third duct portion. The first duct portion has a first surface for permitting a flowable medium to be conveyed adjacent thereto, and a second surface. The first duct portion is formed with a first fiber reinforced resin system. The second duct foam portion has a first surface bonded to the second surface of the first duct portion. The foam portion is formed of fire retarding material derived from a resin system. The third duct portion has a first surface bonded to a second surface of the foam portion. The third duct portion is formed of a second fiber reinforced resin system. Thus, a system is created having an internally sandwiched foam insulation.
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Boeing North American Inc.
Brinson Patrick
Ginsberg Lawrence N.
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