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:
Feb. 23, 2016
Filed:
Jun. 29, 2012
Jevne Branden Michaeu-cunningham, Seattle, WA (US);
Anil Sood, Bellevue, WA (US);
Steve Timm, Bellevue, WA (US);
William Ziegenhagen, Kent, WA (US);
Pauline Tarango, Renton, WA (US);
Jevne Branden Michaeu-Cunningham, Seattle, WA (US);
Anil Sood, Bellevue, WA (US);
Steve Timm, Bellevue, WA (US);
William Ziegenhagen, Kent, WA (US);
Pauline Tarango, Renton, WA (US);
Zetec, Inc., Snoqualmie, WA (US);
Abstract
A rotating field eddy current probe for sensing flaws in electrically conductive tubing is disclosed. The probe includes two stimulation coils physically arranged at 90 degrees to each other about an axis a current sensing portion. The a first alternating current is applied to one of the stimulation coils at a first phase and a second alternating current is applied to the second of the stimulation coils at a second phase, said second phase being electrically 90 degrees apart from said first phase and creating a rotating oscillating magnetic field.