Patent · US Expired

Electromagnet switching device

US6616122B2 · kind B2 · utility

1Cited by

11References

11Claims

0Family size

Assignee

DBT GMBH · DE

Inventors

Wolfgang Kobow · Wuppertal, DE
Michael Dettmers · Kamen, DE

Key dates

Filing date	Mar 15, 2002
Grant date	Sep 9, 2003
Priority date	—
Expiry date	Apr 12, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/7668
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

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).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.