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. 15, 2014
Filed:
Nov. 26, 2009
Roland Mueller, Steinheim, DE;
Gerhard Hueftle, Aspach, DE;
Michael Horstbrink, Stuttgart-Feuerbach, DE;
Tobias Lang, Stuttgart, DE;
Sami Radwan, Stuttgart, DE;
Bernd Kuenzl, Schwieberdingen, DE;
Roland Wanja, Markgroeningen, DE;
Roland Mueller, Steinheim, DE;
Gerhard Hueftle, Aspach, DE;
Michael Horstbrink, Stuttgart-Feuerbach, DE;
Tobias Lang, Stuttgart, DE;
Sami Radwan, Stuttgart, DE;
Bernd Kuenzl, Schwieberdingen, DE;
Roland Wanja, Markgroeningen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
An ultrasonic transducer for use in a fluid medium includes at least one piezoelectric transducer element, at least one matching body for the promotion of a vibrational coupling between the piezoelectric transducer element and the fluid medium, and at least one compensating body situated between the piezoelectric transducer element and the matching body for the reduction of thermal stresses, the compensating body having a coefficient of thermal expansion that is between a coefficient of thermal expansion of the piezoelectric transducer element and a coefficient of thermal expansion of the matching body.