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:
Aug. 21, 2007
Filed:
Feb. 15, 2005
Stephan Haupt, Lübeck, DE;
Michael Sick, Timmendorfer Strand, DE;
Rigobert Chrzan, Oldesloe, DE;
Andreas Nauber, Lübeck, DE;
Dieter Krüger, Stockelsdorf, DE;
Christoph Bernstein, Lübeck, DE;
Wilfried Diekmann, Lübeck, DE;
Stephan Haupt, Lübeck, DE;
Michael Sick, Timmendorfer Strand, DE;
Rigobert Chrzan, Oldesloe, DE;
Andreas Nauber, Lübeck, DE;
Dieter Krüger, Stockelsdorf, DE;
Christoph Bernstein, Lübeck, DE;
Wilfried Diekmann, Lübeck, DE;
Dräger Safety AG & Co. KGaA, , DE;
Abstract
A gas sensor () with a detector element (), which is specific to a gas to be measured and sends a measured signal that depends on the measured gas concentration, has increased measuring sensitivity for measurements in the concentration range from less than 1 ppb to a few ppb. The detector element () is exposed in a gas admission adapter () to a gas to be measured via a diaphragm () arranged in front of the detector element (), wherein the gas admission adapter () has at least a first opening () for the entry of the gas to be measured as well as at least a second opening (), which is connected with a pressure modulator, which generates periodic gas pressure vibrations in the gas admission adapter () and is designed, for example, as a pump ().