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:
Oct. 31, 1978
Filed:
Jun. 24, 1977
Applicant:
Inventors:
Glenn A Geithman, Renton, WA (US);
Wayne E Woodmansee, Seattle, WA (US);
Assignee:
The Boeing Company, Seattle, WA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73588 ;
Abstract
A system for inspection of bonded structures utilizing an electromagnetic transmitting transducer for transmitting at an audio frequency which is varied linearly from 10.sup.2 to 10.sup.4 Hz with a repetition rate which is variable from 2 Hz to 50 Hz into a part being tested and including a condenser microphone also coupled to the part for providing in a receiver circuit an audible output which enables the operator to distinguish a change in the audio spectrum representative of a disbond condition.