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:
Apr. 03, 1990
Filed:
Mar. 01, 1989
Applicant:
Inventor:
Dieter Thonnessen, Viersen, DE;
Assignee:
Pierburg GmbH, Neuss, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B05B / ;
U.S. Cl.
CPC ...
239585 ; 25112915 ;
Abstract
An electromagnetic injection valve in which the spring acting between an iron core and a valve closure member is made of spring steel. The iron core is formed as a round rod which is reduced in diameter at the end thereof forming a stop surface for the valve closure member. A protruding support ring of nonmagnetic material is fixed to the valve closure member for the guidance of the spring, such that the turns of the spring are spaced from the surfaces of the reduced diameter end of the rod and the valve closure member in the region of the air gap between the rod and valve closure member by at least an amount equal to the reduction in diameter of the end of the rod.