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. 25, 2003
Filed:
Mar. 25, 2002
Applicant:
Inventors:
Klaus-Dieter Fiebelkorn, Minfeld, DE;
Alf Puettmer, Karlsruhe, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 1/00 ;
U.S. Cl.
CPC ...
G01N 1/00 ;
Abstract
A device for measuring the specific density of a gaseous or liquid medium ( ) having an acoustic transducer ( ), which is active on both sides, and further having cylindrical delay paths ( ) as well as a ring ( ) in which the acoustic transducer ( ) is embedded. The diameter of the acoustic transducer ( ) is selected such that it is smaller than the diameter of the delay paths ( ) so that diffracted waves generated in the area of the edge of the acoustic transducer generate fewer parasitic echoes and surface waves on the boundary surfaces ( ) resulting in less corruption of the measured result.