Title:
フューエルインレットの製造方法
Document Type and Number:
Japanese Patent JP4346951
Kind Code:
B2
Abstract:
A method for manufacturing a fuel inlet having a good sealing property and a screw structure formed in a precise position involves expanding one end of a long-length stainless pipe (metal pipe) using a cored bar, the tip of the expanded portion which becomes non-uniform as a result of the expanding step is cut off, a screw structure is formed in the expanded portion by using a punch, the tip of the expanded portion which becomes non-uniform as a result of the screw structure forming step is cut off, and thereafter curl forming is conducted to the end of the expanded portion which becomes uniform by using a die so as to provide a seal portion.
Inventors:
Yutaka Tada
Morinaga Mikio
Hiroshi Kashima
Takashi Nakamura
Morinaga Mikio
Hiroshi Kashima
Takashi Nakamura
Application Number:
JP2003129731A
Publication Date:
October 21, 2009
Filing Date:
May 08, 2003
Export Citation:
Assignee:
Bestec Skyei Co., Ltd.
International Classes:
B21D53/88; B60K15/04; B21D17/02; B21D19/08; B21D19/12; B21D41/02; B21D51/16
Domestic Patent References:
| JP11138223A | ||||
| JP2000334521A |
Attorney, Agent or Firm:
Yu Koyama
Osamu Kataoka
Osamu Kataoka