Patent · US Active

Electromagnetic switching device

US7733202B2 · kind B2 · utility

2Cited by

10References

10Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Wolfgang Feil · Schwandorf, DE
Andreas Krätzschmar · Ammerthal, DE
Reinhard Maier · Herzogenaurach, DE
Bernd Trautmann · Erlangen, DE

Key dates

Filing date	Dec 20, 2007
Grant date	Jun 8, 2010
Priority date	—
Expiry date	Jul 3, 2028

Classification

Technology area (CPC H)Electricity
CPC primaryH01H51/06
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electromagnetic switching device is disclosed with an electromagnet and a movable magnet armature, which is mounted in the switching device with a resetting force, which counteracts the closing force, is different than zero in an OPEN position and is formed at least partially by a magnet arrangement with at least one permanent magnet. The magnet arrangement is arranged fixed in position in the switching device outside the magnetic circuit formed from the electromagnet and the magnet armature, and whose resetting force, which acts on the magnet armature, is at a maximum in the OPEN position.

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