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:
Oct. 26, 2010
Filed:
Jan. 18, 2007
Motoyuki Abe, Hitachinaka, JP;
Masahiko Hayatani, Hitachinaka, JP;
Atsushi Sekine, Hitachinaka, JP;
Yasuo Namaizawa, Hitachinaka, JP;
Tohru Ishikawa, Kitaibaraki, JP;
Noriyuki Maekawa, Kashiwa, JP;
Motoyuki Abe, Hitachinaka, JP;
Masahiko Hayatani, Hitachinaka, JP;
Atsushi Sekine, Hitachinaka, JP;
Yasuo Namaizawa, Hitachinaka, JP;
Tohru Ishikawa, Kitaibaraki, JP;
Noriyuki Maekawa, Kashiwa, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An injector used for an internal combustion engine includes a valve needle which closes a fuel passage by contacting a valve seat and opens the fuel passage by separating from the valve seat. A coil and a magnetic core are provided to drive the valve needle, and an anchor is held in a relatively displaceable state with respect to the valve needle. A first biasing device biases the valve needle in a direction opposite to a direction of a drive force, and a second biasing device biases the anchor in the direction of the drive force with a set load smaller than that of the first biasing device. A restricting feature restricts relative displacement of the anchor with respect to the valve needle in the direction of the drive force.