Composite duct system
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United States of America Patent
Stats
-
Aug 31, 1999
Grant Date -
N/A
app pub date -
Dec 26, 1995
filing date -
Dec 26, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
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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Cited Art Landscape
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