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:
Aug. 27, 1985
Filed:
Aug. 16, 1982
Gerhard Huschelrath, Laufach-Frohnhofen, DE;
Wilfried Lein, Hanau, DE;
NUKEM GmbH, Hanau, DE;
Abstract
An apparatus for non-destructively testing ferromagnetic bodies to determine structural irregularities by means of magnetization of the respective object, comprises detectors for magnetic fields arranged close to the surface of the body, by which detectors any changes of behaviour of the magnetic field caused by structural irregularities can be determined. At least two stationary magnetic fields are arranged one after the other on the body that can be displaced in its longitudinal direction, the center axes of these magnetic fields being inclined toward each other at an angle. This angle is determined by the number of magnetic fields and is equal to the quotient from one hundred and eighty degrees and the number of magnetic fields. In the space between the poles of the magnetic field generators, the magnetic field detectors are stationarily arranged and in rows, each extending over a zone being equal to a body section to be tested, vertically to the shifting direction of the body. The outputs of the magnetic field detectors are connected time-multiplex to an evaluation circuit.