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. 13, 1978
Filed:
Dec. 17, 1976
Applicant:
Inventors:
Walter Jefferson Harris, Kent, WA (US);
Ronald Murray Neufeld, Seattle, WA (US);
Assignee:
The Boeing Company, Seattle, WA (US);
Primary Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
324238 ;
Abstract
An eddy current probe for detecting cracks in metal skins and adjacent fastener holes which includes first and second coils wound about first and second vertically stacked ferromagnetic core members which members are held in alignment by an associated optically clear shoe member centered by a centering ring, rotation of the shoe within the centering ring permitting inspection of the entire circumference of a fastener hole.