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:
Mar. 20, 1990
Filed:
Oct. 05, 1988
Applicant:
Inventor:
Michael Horn, South Setauket, NY (US);
Assignee:
Grumman Aerospace Corporation, Bethpage, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01S / ;
U.S. Cl.
CPC ...
367124 ; 367127 ; 367129 ; 367907 ;
Abstract
In order to locate a source of acoustic emissions, two multi-element transducers are employed. The elements of each transducer are subjected to an impinging acoustic wave at different moment in time depending upon the angle of the wave. Outputs from the elements of each transducer are compared with a look-up table to determine the angle. Then, another look-up table is used to determine the X-Y intersection of impinging wave angles from both transducers which locates the source.