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:
Nov. 10, 2009
Filed:
Feb. 25, 2005
Akira Akabane, Miyagi, JP;
Kenichi Sato, Miyagi, JP;
Akira Akabane, Miyagi, JP;
Kenichi Sato, Miyagi, JP;
Keihin Corporation, Tokyo, JP;
Abstract
In an electromagnetic fuel injection valve in which a valve assembly formed by integrally connecting a valve element and a movable core to each other is contained in a valve housing, and a first journal part and a second journal part are provided in the valve assembly so as to be supported slidably in the guide hole in a valve housing, the outside surface of the first journal part () is formed by a sliding surface () slidable on the inside surface of the guide hole () and a pair of tapered tilt surfaces () connecting to both the front and rear sides of the sliding surface (); at least the tilt surface () on the movable core side, of both the tilt surfaces (), is formed of a first tilt surface part () connecting to an end part of the sliding surface () and a second tilt surface part () connecting to the first tilt surface part (); and an angle that the first tilt surface part () makes with a plane perpendicular to the axis line of a valve shaft part () is set larger than an angle that the second tilt surface part () makes with the plane. Whereby a decrease in initial fitting property and an increase in abrasion loss can be avoided, and the weight of the valve assembly can be reduced while good response and flow characteristic are maintained.