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. 20, 1987
Filed:
Dec. 31, 1985
Applicant:
Inventors:
Glenn A Geithman, Renton, WA (US);
Dennis H Gilbert, Renton, WA (US);
Assignee:
The Boeing Company, Seattle, WA (US);
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73642 ; 73644 ; 310326 ;
Abstract
An ultrasonic transducer for generating an apodized beam of ultrasonic energy. A piezoelectric crystal element mounted in a housing generates on ultrasonic signal when electrically energized. A tungsten-epoxy layer mounted on the outer surface of the piezoelectric crystal element has a greater thickness at the periphery of the element than at the center, thus yielding an outwardly concave surface. The tungsten-epoxy layer provides a more uniform beam pattern.