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. 01, 2014
Filed:
Sep. 08, 2006
Applicants:
Norbert Elsner, Bubenreuth, DE;
Norbert Mitlmeier, Ursensollen, DE;
Bernd Trautmann, Erlangen, DE;
Inventors:
Assignee:
Siemens Aktiengelleschaft, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B 21/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
In order to determine contact erosion of an electromagnetic switching device, a mechanical parameter is measured which characterizes the time course of the relative movement between the contacts, said movement being caused by an actuator. The point in time when the contacts close is determined by evaluating the time course of the relative movement, and the distance traveled by the contact/s until said point in time or the distance traveled by the actuator from said point in time until reaching the final position thereof is detected at least indirectly and is compared to a stored reference value.