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:
Apr. 21, 1987
Filed:
Jul. 01, 1986
Applicant:
Inventor:
Rocco Torre, Mt. Clemens, MI (US);
Assignee:
Magnaflux Corporation, Chicago, IL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
324238 ; 324233 ;
Abstract
An eddy current testing system is disclosed in which a pair of thin one-layer windings are disposed against a pair of thin plates of high permeability magnetic material, about aligned openings in the plates through which a wire is passed, pits and inclusions in the wire being detected by comparing signals corresponding to the electrical impedances on the two windings. The plates of high permeability magnetic material operate to concentrate magnetic flux in small regions of the wire, to obtain a high resolution.