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:
Oct. 01, 2013
Filed:
May. 25, 2010
Victor Otto DE Haan, Puttershoek, NL;
Paul Andre DE Jong, Vlaardingen, NI;
Thomas Theodorus Arnoldus Van Overbeek, Delft, NL;
Victor Otto De Haan, Puttershoek, NL;
Paul Andre De Jong, Vlaardingen, NI;
Thomas Theodorus Arnoldus Van Overbeek, Delft, NL;
Rontgen Technische Dienst B.V., Rotterdam, NL;
Abstract
A method of non-destructively testing a magnetisable conducting object surrounded by a magnetisable layer wherein the field strength of a primary magnetic field that is applied exterior to the magnetisable layer is abruptly changed. A vanishing secondary magnetic field generated by eddy currents induced by the changed field strength of the primary magnetic field is received and the temporal field strength of the received secondary magnetic field is analysed for deriving characteristics of the magnetisable conducting object. Furthermore, a transient tertiary magnetic field exterior to the magnetisable layer when the field strength of the primary magnetic field abruptly changes is applied wherein the orientation of the primary and tertiary magnetic field, respectively, are mutually opposite.