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:
Nov. 30, 2004
Filed:
Oct. 07, 2002
Applicant:
Inventor:
Rudolf Thurn, Pressath, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 1/700 ; H01L 4/1053 ;
U.S. Cl.
CPC ...
H04R 1/700 ; H01L 4/1053 ;
Abstract
An ultrasonic transducer includes a housing, in which an ultrasonic oscillator is secured with at least one of a nonpositive and positive fit and at least three layers with acoustic wave impedances that vary to alternating degrees. The layers are arranged such that the ultrasonic oscillator is embedded in a first relatively acoustically soft layer, a second layer, which includes at least one relatively acoustically hard material, surrounds the first layer, and a third relatively acoustically soft layer at least partially surrounds the second layer.