Patent ID: 6085800
Filing Date: 2000-07-11
Classification: F02M,F16L

Abstract:
A lapped steel fuel injection tube comprising:a seamless inner pipe formed from steel and having substantially cylindrical inner and outer surfaces;an intermediate pipe formed from steel and having substantially cylindrical inner and outer surfaces, said inner surface of said intermediate pipe being opposed to said outer surface of said seamless inner pipe with a layer of a solder material therebetween;an electro-seamed outer pipe formed from steel and having a cylindrical inner surface opposed to the outer surface of said intermediate pipe with a layer of solder material therebetween, said electro-seamed outer pipe having a cylindrical outer surface substantially free of steps thereon; andsaid lapped steel fuel injection tube being drawn and heated such that the solder material secures the cylindrical inner and outer surfaces of the intermediate pipe to the cylindrical outer surface of the seamless inner pipe and the cylindrical inner surface of the electro-seamed outer pipe respectively.