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:
Jan. 14, 1986
Filed:
Sep. 08, 1983
Applicant:
Inventors:
Glenn A Geithman, Renton, WA (US);
Albert W Chau, Redmond, WA (US);
Assignee:
The Boeing Company, Seattle, WA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01B / ; G01R / ; G01R / ; G01N / ;
U.S. Cl.
CPC ...
324230 ; 324202 ; 324236 ;
Abstract
A system for measuring the cladding thickness on aluminum sheets which includes a cylindrical probe holder with four evenly spaced contact points surrounding a low temperature coefficient torroidal ferrite core which provides a signal to an aluminum cladding thickness signal processing circuit comprising a crystal oscillator, low drift detector, and push button calibration instrument portion thereby enabling drift free repeatable measurements.