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:
Dec. 21, 1993
Filed:
May. 22, 1992
Applicant:
Inventors:
Dipankar Ganguly, Redmond, WA (US);
George W Keilman, Woodinville, WA (US);
Assignee:
Diagnostic Devices Group, Limited, Kirkland, WA (US);
Primary Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
12866301 ; 12866206 ; 73642 ;
Abstract
A cylindrical ultrasonic transducer (36) is disclosed. The transducer includes a cylindrical main element (38) provided with a plurality of ring-shaped secondary elements (40 and 42) that are triangular in cross section. By controlling the number, geometry, and construction of the secondary elements, substantially any desired ultrasonic emission pattern can be produced while maintaining a low overall transducer profile.