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:
Sep. 14, 1999
Filed:
Jan. 30, 1998
Applicant:
Inventors:
Hideto Takeda, Kariya, JP;
Eiji Iwanari, Chiryu, JP;
Assignee:
Denso Corporation, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M / ;
U.S. Cl.
CPC ...
2395854 ; 2395851 ; 25112921 ;
Abstract
A fuel injection valve is composed of a stationary core, a driving coil, a movable core driven by the driving coil, a valve seat having a nozzle and a valve member integrated with the movable. The movable core is made of powdered soft magnetic material and the valve member is made of powdered hard non-magnetic material, and the movable core and the valve member are molded with resin. The movable core is sintered and hardened and the valve member is annealed thereafter. Preferably, the movable core is made of ferritic stainless steel, and the valve member is made of martensitic stainless steel.