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US 6,616,122 B2Granted
Electromagnet switching device
AssigneeDBT GmbH
InventorsWolfgang Kobow, Michael Dettmers
Life of this patent
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AssigneeDBT GmbH
InventorsWolfgang Kobow, Michael Dettmers
Estimating the term…
An electromagnet switching device for hydraulic or electrohydraulic directional control valves, especially applied in advancing supports of underground mining equipment with controllable electromagnets (10A, 10B) accommodated in a case (1) and comprising armature (5), coil bodies (3), magnetisable core (4) and switching plunger (6), whose switching plunger (6) has a switching end which can be coupled to the closing element of a hydraulic valve (33A, 33B) and an actuating end (8) for manual operation, whereby the effective switching lift of the switching plunger (6) is adjustable. The switching plunger (6) is joined to the armature (5) by means of a screwed connection and adjustment of the switching lift is facilitated by a relative rotation between the armature (5) and the switching plunger (6).
An electromagnet switching device for hydraulic or electrohydraulic directional control valves, especially applied in advancing supports of underground mining equipment with controllable electromagnets 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 and an actuating end for manual operation, whereby the effective switching lift of the switching plunger is adjustable, in which 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.
Dependencies are inferred from the claim text.