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. 04, 2006
Filed:
May. 11, 2005
Werner Wagner, Hirschaid, DE;
Armin Braun, Altendorf, DE;
Werner Wagner, Hirschaid, DE;
Armin Braun, Altendorf, DE;
INA Schaeffler KG, , DE;
Abstract
An electromagnetic hydraulic valve having an electromagnet with a coil winding arranged on a spool, and a magnet housing, a valve stem having a pressure connection, a tank connection and a consumer connection. The spool and the valve stem are a one-piece plastic body which has an axial longitudinal bore which is an armature space for a magnet armature and also is a control region for a closing body. The magnet housing, with a collar which projects into the longitudinal bore, forms a top magnet pole of the electromagnet. A bottom magnet pole, connected to the magnet housing in a magnetically conductive manner, of the electromagnet likewise projects into the longitudinal bore of the plastic body. The bottom magnet pole of the electromagnet is formed by an annular disk which is integrally cast in the plastic body and which, by a plurality of free sections and a plurality of radial webs at its outer circumference, is designed both as an element for fastening the magnet housing to the hydraulic valve and as an element for fastening the hydraulic valve to an engine block of an internal combustion engine.