Fuel injector, nozzle body, and manufacturing method of...

Metal deforming – With cutting – Machining between plural metal-deforming operations

Reexamination Certificate

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C072S349000

Reexamination Certificate

active

06976381

ABSTRACT:
To manufacture a cylindrical member, such as the nozzle body of a fuel injector, in which a fluid passage is formed at high productivity and to improve the reliability.A cylindrical member, such as the nozzle body of a fuel injector, in which a fluid passage is formed is manufactured by drawing martenstic stainless steel. In addition, during the drawing process of martenstic stainless steel, an intermediate product is annealed and lug is removed after another drawing process, and then is subjected to drawing again to obtain a product.

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Comments on category “X” documents cited in European Search Report.

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