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US 4,630,789 AGranted
Dielectric isolated fuel and hydraulic tubes
AssigneeThe Boeing Company
InventorJerome C. Rosenberg
Life of this patent
Estimating the term…
Abstract
A plurality of metal conduits for fuel for hydraulic fluids extend through an aircraft fuel tank made of non-metallic materials such as carbon-epoxy. The conduits are attached to wall portions of the tank at spaced apart locations. The conduits are spaced apart from each other and are each spaced away from such wall portion of the tank. A dielectric insulator such as teflon or polyimide is provided on each conduit.
Claims5
In an aircraft,
- a fuel tank comprising walls of a non-metallic composite material such as carbon-epoxy or the like,
- a metal conduit for fuel or a hydraulic liquid extending through said tank, and spaced from the tank and normally being surrounded by a fuel-air mixture within the tank;
- means for electrically grounding said metal conduit to said tank;
- and
- a dielectric insulator on said metal conduit of a thickness sufficient to prevent arcing between the tank and the conduit which might otherwise occur in response to a lightening strike on the tank.
2 more elements
Dependencies are inferred from the claim text.