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. 16, 2018
Filed:
Mar. 21, 2016
Applicant:
Board of Trustees of Michigan State University, East Lansing, MI (US);
Inventors:
Assignee:
BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY, East Lansing, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 27/90 (2006.01);
U.S. Cl.
CPC ...
G01N 27/9033 (2013.01); G01N 27/904 (2013.01); G01N 27/9046 (2013.01);
Abstract
A rotating magnetic field probe includes three (or more) windings that work in both transmit and receive mode, to form an eddy current detection transceiver. In a transmit mode, the windings are driven with a drive signal (e.g., an alternating current) having similar or the same magnitude at each winding, but differing in phase from one another. In a receive mode, the terminal voltages of the windings is measured and summed to determine the location of a defect.