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:
Jan. 25, 2022
Filed:
Dec. 28, 2018
Applicant:
Avl List Gmbh, Graz, AT;
Inventors:
Herbert Reingruber, Graz, AT;
Wolfgang Schindler, Graz, AT;
Klaus-Christoph Harms, Thal/Graz, AT;
Tristan Reinisch, Graz, AT;
Assignee:
AVL List GmbH, Graz, AT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 29/036 (2006.01); G01N 29/24 (2006.01); G01N 21/17 (2006.01); G01N 33/00 (2006.01);
U.S. Cl.
CPC ...
G01N 29/036 (2013.01); G01N 21/1702 (2013.01); G01N 29/2425 (2013.01); G01N 33/0036 (2013.01); G01N 2021/1704 (2013.01);
Abstract
Aspects of the present disclosure are directed to a measuring device for determining a measured variable of a measuring gas by means of a photoacoustic method. In some embodiments, the measuring device includes a flow channel for the measuring gas having at least one feed line, a photoacoustic measuring cell and a discharge line. in such an embodiment, the measuring device further includes at least one acoustic filter member tuned to a useful frequency of the measuring cell, and at least one cavity resonator arranged on the flow channel.