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:
Mar. 10, 2015
Filed:
Aug. 23, 2012
Martin Böttcher, Berlin, DE;
Marcus Kampf, Berlin, DE;
Martin Böttcher, Berlin, DE;
Marcus Kampf, Berlin, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
An electromagnetic drive for an electrical switch such as a circuit breaker, has at least one movable armature that can implement a lifting movement along a pushing direction for moving a movable switching contact of the switch. In a closed armature position, the armature closes a magnetic circuit through first and second magnetically conductive yoke parts. A permanent magnet produces a magnetic field for the magnetic circuit and a holding force for holding the armature in the closed position. A coil is disposed to generate a magnetic flux in the same or opposite direction as the magnetic flux of the permanent magnet. The electromagnetic drive can be readjusted after installation, where the first and second yoke parts are moved relative to one another by the permanent magnet into the adjusted state, whereupon they are fixed in position.