The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 20, 2005
Filed:
Mar. 19, 2002
Fuel injector, nozzle body, and manufacturing method of cylindrical part equipped with fluid passage
Atsushi Koshizaka, Hitachinaka, JP;
Atsushi Sekine, Hitachinaka, JP;
Keiji Kawahara, Hitachinaka, JP;
Mizuho Yokoyama, Hitachinaka, JP;
Atsushi Koshizaka, Hitachinaka, JP;
Atsushi Sekine, Hitachinaka, JP;
Keiji Kawahara, Hitachinaka, JP;
Mizuho Yokoyama, Hitachinaka, JP;
Hitachi, Ltd., Tokyo, JP;
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.