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:
Apr. 17, 2018
Filed:
Mar. 25, 2015
Schaltbau Gmbh, Munich, DE;
Robert Kralik, Poing, DE;
Schaltbau GmbH, Munich, DE;
Abstract
The present invention relates to an electric switching apparatus, in particular a DC contactor. The switching apparatus has at least one switching point as well as at least one arc-quenching device that is assigned to the switching point. The arc-quenching device comprises at least one quenching element and at least one permanent magnet for influencing an arc that arises during the switching process. The arc is blown into the quenching element by a magnetic field that is created by the permanent magnet. It is provided according to the invention that the at least one permanent magnet forms at the same time the quenching element and that it is arranged and polarized in a way that the arc is attracted by the permanent magnet and thereby sucked onto the permanent magnet and quenched by said permanent magnet.