Method of manufacturing a fuel inlet

  • US 6,615,489 B2
  • Filed: 12/03/2001
  • Issued: 09/09/2003
  • Est. Priority Date: 12/04/2000
  • Status: Active Grant
First Claim
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1. A method of manufacturing a fuel inlet, the fuel inlet comprising an inlet pipe for conveying fuel into a fuel tank and a breather tube for venting air from the fuel tank toward an end of the inlet pipe when the fuel is filled into the fuel tank, the method comprising the steps of:

  • providing a first stainless pipe for manufacturing the inlet pipe and a second stainless pipe for forming the breather tube;

    expanding an end portion of the inlet pipe to form a filling part having a larger diameter than a remainder of the inlet pipe;

    forming a helical groove on a peripheral wall of the filling part to produce a screw-thread in the filling part;

    welding the breather tube to the inlet pipe; and

    applying a cationic electrodeposition coating to the fuel inlet.

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