Composite duct system
AssigneeBoeing North American, Inc.
InventorMichael D. MacKay
Life of this patent
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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.
Claims32
A composite system for use in forming a duct system comprising:
- a) a first duct portion having a first surface for permitting a flowable medium to be conveyed adjacent thereto and a second surface, said first duct portion being formed of a first fiber reinforced resin system;
- b) a second duct foam portion having a first surface bonded to said second surface of said first duct portion, said foam portion being formed of fire retarding material derived from a resin system, said fire retarding material being in a density range of about 1 to about 40 lbs. per cubic feet;
- and,
- c) a third duct portion having a first surface bonded to a second surface of said foam portion, said third duct portion being formed of a second fiber reinforced resin system.
A duct system, comprising:
- a) an inner duct portion for permitting a flowable medium to be conveyed therethrough, said inner duct portion being formed of a first fiber reinforced resin system;
- b) a foam portion disposed in surrounding relationship to said inner duct portion, said foam portion being formed of fire retarding material derived from a resin system, said fire retarding material being in a density range of about 1 to about 40 lbs. per cubic feet;
- and
- c) an outer duct portion in surrounding relationship to said foam portion, said outer duct portion being formed of a second fiber reinforced resin system.
A duct system, comprising:
- four panel subassemblies, each panel subassembly comprising a composite system, comprising:
- a) a first duct portion having a first surface for permitting a flowable medium to be conveyed adjacent thereto and a second surface, said first duct portion being formed of a first fiber reinforced resin system;
- b) a second duct foam portion having a first surface bonded to said second surface of said first duct portion, said foam portion being formed of fire retarding material derived from a resin system;
- and,
- c) a third duct portion having a first surface bonded to a second surface of said foam portion, said third duct portion being formed of a second fiber reinforced resin system;
- and
- four corner brackets for securing said four panel subassemblies together so as to form an integral duct system.
A duct system for heating, ventilation and air conditioning for shipboard applications, comprising:
- a) a first duct portion having a first surface for permitting a flowable medium to be conveyed adjacent thereto and a second surface, said first duct portion being formed of a first fiber reinforced resin system;
- b) a second duct foam portion having a first surface bonded to said second surface of said first duct portion, said foam portion being formed of fire retarding material derived from a resin system, said fire retarding material being in a density range of about 1 to about 40 lbs. per cubic feet;
- and,
- c) a third duct portion having a first surface bonded to a second surface of said foam portion, said third duct portion being formed of a second fiber reinforced resin system.
Dependencies are inferred from the claim text.