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:
Jan. 31, 2012
Filed:
Sep. 25, 2006
Masahiko Hayatani, Hitachinaka, JP;
Motoyuki Abe, Hitachinaka, JP;
Toru Ishikawa, Kitaibaraki, JP;
Eiichi Kubota, Ishioka, JP;
Takehiko Kowatari, Kashiwa, JP;
Masahiko Hayatani, Hitachinaka, JP;
Motoyuki Abe, Hitachinaka, JP;
Toru Ishikawa, Kitaibaraki, JP;
Eiichi Kubota, Ishioka, JP;
Takehiko Kowatari, Kashiwa, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In relation to injectors used for internal-combustion engines, it is important to decrease valve closing delay time and also the minimum injection quantity, while these are affected by remanent magnetism in the fixed core, surface tension of the fuel, etc. With reference to a fuel injection valve with a pipe-shaped member to enclose a fixed core and a movable part and further with coils and yokes to cover up the above pipe-shaped member, the anchor to drive the movable member has a plurality of through holes for fuel passage extending in the axial direction, while these through holes are arranged at a certain intervals in the circumferential direction, and projections formed to constitute a contacting surface to touch the fixed core arranged randomly in between the through holes.