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:
Oct. 27, 2009
Filed:
Sep. 22, 2005
Andreas Nauber, Lübeck, DE;
Dieter Krüger, Stockelsdorf, DE;
Michael Sick, Timmendorfer Strand, DE;
Christoph Bernstein, Lübeck, DE;
Michael Dietrich, Stockelsdorf, DE;
Hans-jürgen Busack, Lübeck, DE;
Rigobert Chrzan, Bad Oldesloe, DE;
Kathrin Hermann, Lübeck, DE;
Andreas Nauber, Lübeck, DE;
Dieter Krüger, Stockelsdorf, DE;
Michael Sick, Timmendorfer Strand, DE;
Christoph Bernstein, Lübeck, DE;
Michael Dietrich, Stockelsdorf, DE;
Hans-Jürgen Busack, Lübeck, DE;
Rigobert Chrzan, Bad Oldesloe, DE;
Kathrin Hermann, Lübeck, DE;
Dräger Safety AG & Co. KGaA, Lübeck, DE;
Abstract
An electrochemical gas sensor with a stacked arrangement of electrodes and nonwoven layers arranged in parallel, comprising at least one measuring electrode () and at least one counterelectrode (). A porous membrane () that is permeable to air is in contact with the stacked arrangement of electrodes and nonwoven layers arranged in parallel at least on one side, at least one layer of a hydrophilic nonwoven () is located between the electrodes. The porous membrane () that is permeable to air and the hydrophilic nonwoven () extend into a separate equalization volume (), which is filled with electrolyte at least partially and is located at least partially in one plane with the electrodes. The separate equalization volume () surrounds the electrode arrangement at least partially in this plane, and the porous membrane () that is permeable to air is exposed to ambient pressure at least in partial areas. Such sensors are characterized by a flat shape, high insensitivity to shocks, independence from the position, and high tolerance to variations in environmental humidity.