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:
Mar. 10, 1987
Filed:
Dec. 27, 1983
Applicant:
Inventors:
Robert J Birchak, Spring, TX (US);
Flora J Harris, Lynchburg, VA (US);
Amos E Holt, Lynchburg, VA (US);
Assignee:
The Babcock & Wilcox Company, New Orleans, LA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G01R / ;
U.S. Cl.
CPC ...
324220 ; 324232 ; 324242 ; 324262 ;
Abstract
An electromagnetic inspection system for detecting, in-situ, the location and character of flaws in a relatively long, thick-walled small bore tube of a heat exchanger wherein a resultant magnetic field is induced in the wall of the tube of selected direction and magnitude by the vector addition of the magnetic fields produced by two magnetic field generators, at least one of which is carried by a scanner for traversing the tube and having an array of sensors mounted in close proximity to the wall of the tube generating a unique signal as the scanner passes a flaw in the tube.