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:
Nov. 02, 2004
Filed:
Mar. 15, 2002
Applicant:
Inventors:
Norbert Mitlmeier, Ursensollen, DE;
Bernhard Streich, Amberg, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01H 4/700 ;
U.S. Cl.
CPC ...
H01H 4/700 ;
Abstract
An electromagnetic switching device is monitored at least for the correct connection of an input contact and of an output contact by a contact bridge. For this purpose, a monitoring circuit is coupled to the contacts before the contact bridge is moved into a connection position when a connection command is given, and an indicator of the correct connection of the contacts is determined by evaluation of a contact voltage dropped across the contacts and supplied to the monitoring circuit.