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:
Nov. 20, 2001
Filed:
Sep. 21, 1999
Applicant:
Inventors:
James D. Cotton, Issaquah, WA (US);
Darryl F. Garrigus, Issaquah, WA (US);
Assignee:
The Boeing Company, Seattle, WA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 3/312 ; G01R 3/307 ; G01R 2/782 ;
U.S. Cl.
CPC ...
G01R 3/312 ; G01R 3/307 ; G01R 2/782 ;
Abstract
A method and apparatus for detection of rare earth metal oxide inclusions in non-magnetic metal. The method utilizes a D.C. magnetic search field coupled with a magnetic field sensor for detecting the response of a rare earth metal oxide casting fragment inclusion through the bending and amplification of the ambient magnetic field at the defect location.