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. 01, 1991
Filed:
Feb. 23, 1990
Applicant:
Inventor:
Rudolf Krauss, Stuttgart, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ; F16K / ; F02M / ;
U.S. Cl.
CPC ...
251 86 ; 239585 ; 25112915 ; 251 65 ; 335262 ; 335280 ;
Abstract
In known injection valves having a spherical valve closing member, it is difficult to center the valves. In the novel injection valve, self-centering is precisely achieved. In a valve having a spherical valve closing member on which a restoring spring is supported and which is located facing the end of the core of an electromagnet, it is proposed that a centering ring of soft magnetic material be disposed between the spherical valve closing member and the core end face. The injection valve is particularly well suited for fuel injection systems in internal combustion engines.