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:
Sep. 05, 1978
Filed:
Jun. 24, 1977
Applicant:
Inventors:
Glenn Allen Geithman, Renton, WA (US);
Wayne Earl Woodmansee, Seattle, WA (US);
Assignee:
The Boeing Company, Seattle, WA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73588 ; 73609 ;
Abstract
A system for inspection of adhesively bonded structures utilizing a piezoelectric transmitting transducer for transmitting a fixed frequency tone burst, e.g., 25 KHz, at a predetermined repetition rate, e.g., 100 Hz, into a part being tested and including a piezoelectric receiving transducer also coupled to the part for providing in a receiver circuit an audible output which permits the operator to distinguish amplitude variations of the 100 Hz repetition rate signal representative of the presence of an unbonded area.