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. 09, 2003
Filed:
Mar. 15, 2002
Wolfgang Kobow, Wuppertal, DE;
Michael Dettmers, Kamen, DE;
DBT GmbH, , DE;
Abstract
An electromagnet switching device for hydraulic or electrohydraulic directional control valves, especially applied in advancing supports of underground mining equipment with controllable electromagnets ( A, B) accommodated in a case ( ) and comprising armature ( ), coil bodies ( ), magnetisable core ( ) and switching plunger ( ), whose switching plunger ( ) has a switching end which can be coupled to the closing element of a hydraulic valve ( A, B) and an actuating end ( ) for manual operation, whereby the effective switching lift of the switching plunger ( ) is adjustable. The switching plunger ( ) is joined to the armature ( ) by means of a screwed connection and adjustment of the switching lift is facilitated by a relative rotation between the armature ( ) and the switching plunger ( ).