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:
Feb. 03, 2004
Filed:
Sep. 23, 2002
Gabriel Daalmans, Hoechstadt, DE;
Ruediger Doell, Nuremberg, DE;
Klaus Weinzierl, Nũrnberg, DE;
Siemens Aktiengesellschaft, , DE;
Abstract
A method and measuring device for the in situ detection of the &ggr;-&agr; phase transformation of strip steel. The detection takes place on the basis of the eddy currents of the nonmagnetic phase, which are caused from the workpiece when an electromagnetic excitation field is applied, and on the basis of response fields which are generated by the magnetic phase which may be present. At least one electromagnetic excitation field which acts on the workpiece is generated by means of at least one excitation coil, and a response field which results from the application of the excitation field is measured by means of at least one detector measurement coil. The resulting measurement signal, which is dependent on the distance between the measuring device and the workpiece, is used to detect the degree of transformation.