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:
Feb. 26, 2013
Filed:
Dec. 03, 2009
Mladen Schlichte, Lübeck, DE;
Jürgen Osswald, Lübeck, DE;
Mladen Schlichte, Lübeck, DE;
Jürgen Osswald, Lübeck, DE;
Dräger Safety AG & Co. KGaA, Lübeck, DE;
Abstract
A gas sensor is provided for use in a hazardous explosive atmosphere present continuously or for a long time. The gas sensor is not provided with a pressure-proof housing and is provided with at least one catalytic or semiconductor measuring element () in a hollow body () defining the measuring element () against the environment. The hollow body has breathing openings () and wherein the ratio of the area of the breathing openings to the total area of the hollow body equals, furthermore, at most 0.8 or the hollow body is porous with a porous hollow body material having a pore size according to ISO 4003 equal to at most 2 mm.