Internal-combustion engines – Charge forming device – Fuel injection system
Reexamination Certificate
2007-10-02
2007-10-02
Gimie, Mahmoud (Department: 3747)
Internal-combustion engines
Charge forming device
Fuel injection system
C138S143000
Reexamination Certificate
active
11153166
ABSTRACT:
A joint structure connects a diverging branch pipe to a fuel rail for an internal combustion engine. The fuel rail is stainless steel or steel with rust prevention processing on at least the inner face. The diverging branch pipe is a double pipe with inner and outer pipes. The inner pipe has excellent rust preventing ability with respect to fuel on its inner face in comparison with the outer face of the outer pipe. The inner and outer pipes are connected by a nut for fastening through a joint fitting. A connecting seal portion of the diverging branch pipe and the joint fitting has rust preventing ability equal to that of the inner circumferential face of the diverging branch pipe. An entire liquid contact portion, including a seal face of the diverging branch pipe with respect to the fuel is covered with the inner pipe.
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Asada Kikuo
Hashimoto Yasuaki
Nishizawa Hiroyuki
Seino Iichiro
Usui Masayoshi
Casella Anthony J.
Gimie Mahmoud
Hespos Gerald E.
Usui Kokusai Sangyo Kaisha Limited
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