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:
Jun. 12, 2001
Filed:
Apr. 22, 1998
Donald E. Lowden, Birmingham, AL (US);
Kenneth W. Sanders, Hueytown, AL (US);
USX Corporation, Pittsburgh, PA (US);
Abstract
An inspection station and process for pipe or other ferromagnetic articles utilizes a generally straight flux field amplifier made of a multi-stranded cable surrounded by non-conducting resin, for inducing transverse lines of magnetic force. The flux field amplifier is surrounded by a coil which is also energized to make longitudinal lines of force; the two types of lines of force are vectored. The pipe or other ferromagnetic article is sprayed with UV-sensitive magnetic particles in a more or less conventional manner to display the vectored lines of force together with any flaws in the metal. The cable core of the flux field amplifier does not need a cooling system and is able to last longer than conventional solid cores.