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. 12, 2008
Filed:
Mar. 11, 2003
Burkhard Stock, Lübeck, DE;
Dieter Krüger, Lübeck, DE;
Rigobert Chrzan, Bad Oldesloe, DE;
Hans-jürgen Busack, Lübeck, DE;
Burkhard Stock, Lübeck, DE;
Dieter Krüger, Lübeck, DE;
Rigobert Chrzan, Bad Oldesloe, DE;
Hans-Jürgen Busack, Lübeck, DE;
Drager Safety AG & Co. KGaA, Lübeck, DE;
Abstract
A breath alcohol measuring device includes a flow chamber, for receiving exhaled breathing gas of a person, with a flow diaphragm. A differential pressure sensor has a first measuring connection via a first gas line () to the interior space of the flow chamber () upstream of the flow diaphragm (), and a second measuring connection via second and third gas lines () and a breath alcohol sensor () to the interior space of the flow chamber () downstream of the flow diaphragm (). A throttling element () is present in the second gas line (). The second gas line () is connected to a sampling system (), and an evaluating and control unit () is connected to the sensors () and to the sampling system () for controlling the sampling system.