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:
Jan. 22, 2013
Filed:
Oct. 29, 2008
Roland Richard Moser, Zurich, CH;
Bernard Revaz, Geneva, CH;
Serge Reymond, Geneva, CH;
Pavel Kejik, Ecublens, CH;
Radivoje Popovic, St-Sulpice, CH;
Roland Richard Moser, Zurich, CH;
Bernard Revaz, Geneva, CH;
Serge Reymond, Geneva, CH;
Pavel Kejik, Ecublens, CH;
Radivoje Popovic, St-Sulpice, CH;
ALSTOM Technology Ltd., Baden, CH;
Abstract
In a method for determining geometrical characteristics (d) of an anomaly () which changes the electrical conductivity in the region near the surface of an electrically conducting, in particular a metallic test object (), a considerable simplification is achieved in that, in the region of the anomaly () in the test object (), eddy currents () of different frequencies are excited, and the magnetic field (B), which is produced by the excited eddy currents, is scanned in the vicinity of the anomaly () and the geometric characteristics of the anomaly are exclusively deduced from the distribution of the magnetic field (B).