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:
Apr. 08, 2014
Filed:
Dec. 09, 2008
Ultrasonic transducer having a matching layer between a piezoelectric element and a coupling element
Applicants:
Andreas Berger, Hasel-Glashutten, CH;
Michal Bezdek, Aesch, CH;
Frank Wandeler, Remingen, CH;
Achim Wiest, Weil am Rhein, DE;
Inventors:
Andreas Berger, Hasel-Glashutten, CH;
Michal Bezdek, Aesch, CH;
Frank Wandeler, Remingen, CH;
Achim Wiest, Weil am Rhein, DE;
Assignee:
Endress + Hauser Flowtec AG, Reinach, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01F 1/66 (2006.01); B06B 1/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
An ultrasonic transducer for determining and/or monitoring flow of a measured medium through a measuring tube, which includes at least one piezoelectric element, at least one coupling element and at least one adapting, or matching, layer between the piezoelectric element and coupling element. The adapting, or matching, layer has a thickness smaller than a fourth of an uneven integer multiple of a wavelength of an ultrasonic signal being used.