Is a
Patent attributes
Patent Applicant
0
Current Assignee
0
Patent Jurisdiction
Patent Number
Patent Inventor Names
Franz-Heinrich Suilmann0
Werner Reinelt0
Date of Patent
January 4, 2005
0Patent Application Number
100993010
Date Filed
March 15, 2002
0Patent Citations Received
Patent Primary Examiner
Patent abstract
An electrohydraulic control device for use in the hydraulic systems of advancing support frames of underground mining equipment, which can be switched by means of switching plungers of electromagnets (24), and the directional control valves (3, 4) are put together from pilot control valve (14) and main control valves (3) arranged on a common axis, where by the pilot control valve (4) switches the main control valve (3) by means of a separate pressure medium supply to be found on an additional control pressure line, in which accepting borings (2) are suited for the acceptance of main control and pilot control valves (3, 4) constructed as cartridges which are plugged together.
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