1
Burkhard Stock, Jurgen Sohege: Gas sampling system having a mouthpiece. Dragerwerk Aktiengesellschaft, Walter Ottesen, April 14, 1998: US05739412 (22 worldwide citation)

The combination of the invention includes a mouthpiece 1 and a sample-taking system 8 for analyzing a gas sample. The mouthpiece 1 has a flow resistor 5 in the exhalation direction and a sample-taking connecting element 6 for the gas sample to be analyzed. The sample-taking system 8 has a pump and a ...


2
Burkhard Stock: Measuring apparatus for measuring the concentration of gases utilizing infrared absorption. Dr agerwerk, Walter Ottesen, December 9, 1997: US05696379 (18 worldwide citation)

A measuring apparatus for measuring the concentration of a gas by infrared absorption includes a first radiation source 11 having a first modulation frequency, an arcuate waveguide 13 for receiving the gas to be measured therein, and two radiation detectors (15, 16). The measuring apparatus of the i ...


3
Burkhard Stock: Device and process for measuring breath alcohol. Dräger Safety & Co KGaA, McGlew and Tuttle P C, August 2, 2005: US06923040 (14 worldwide citation)

A device for measuring breath alcohol has a mouthpiece (1) for picking up the exhaled respiratory gas volume flow of a person to be measured. The mouthpiece has a flow diaphragm (3). A pressure sensor (4) is connected via a first gas line to the mouthpiece (1) upstream of the flow diaphragm (3). A b ...


4
Burkhard Stock, Dieter Krüger, Rigobert Chrzan, Hans Jürgen Busack: Device and process for measuring breath alcohol. Drager Safety & Co KGaA, McGlew and Tuttle P C, February 12, 2008: US07329390 (11 worldwide citation)

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 (5) to the interior space of the flow chamber (2) upstream of the flow diaphragm (3) ...


5
Burkhard Stock: Process for calibrating a breath alcohol-measuring instrument. Drager Sicherheitstechnik, McGlew and Tuttle P C, August 1, 2000: US06096558 (11 worldwide citation)

A process for calibrating a breath alcohol-measuring instrument (7) with a calibrating gas generator (1) with a liquid container (2) for aqueous ethanol solution and air feed device, which allow air to bubble through the ethanol solution and for passing gas from the atmosphere above the ethanol solu ...


6
Burkhard Stock: Method for quantitatively determining a component of a gas flow and apparatus therefor. Dragerwerk Aktiengesellschaft, Walter Ottesen, June 21, 1994: US05321972 (9 worldwide citation)

The invention relates to a method for quantitatively determining a gas component of a gas flow and an apparatus therefor. The apparatus includes a testing conduit having a throttle through which the gas flow flows. A sample conduit leading to the gas inlet of a gas sensor branches away from the test ...


7
Burkhard Stock: Apparatus and method for detecting gas components. Dragerwerk Aktiengesellschaft, McGlew and Tuttle, December 11, 1990: US04976135 (8 worldwide citation)

A device for the transport of a gas sample into the measuring chamber of a detector for the determination of the portion of a component in a gas, and in particular of alcohol in respiratory air, includes a piston-cylinder unit serves as the transport element. The sample is used as completely as poss ...


8
Burkhard Stock: Arrangement for detecting a gaseous component in a gas flow. Dräger Sicherheitstechnik, Walter Ottesen, September 18, 2001: US06289718 (7 worldwide citation)

The invention is directed to an arrangement for detecting a gaseous component in a gas flow which reaches a measuring chamber (


9
Burkhard Stock: Infrared measuring arrangement with expanded measuring range. Drager Sicherheitstechnik, June 13, 2000: US06075246 (6 worldwide citation)

An infrared measuring arrangement with essentially expanded measuring range with an infrared radiation source (3) and an infrared radiation detector (4). The infrared radiation source (3) has a first, direct beam path to the infrared radiation detector (4), on the one hand, and, on the other hand, a ...


10
Burkhard Stock: Method for determining characteristic variables of an electrochemically convertible substance in a gas sample. Dragerwerk Aktiengesellschaft, Walter Ottesen, March 18, 1997: US05612896 (6 worldwide citation)

The invention is directed to a method for determining characteristic variables of an electrochemically convertible substance in a gas sample. The component of the substance in the gas sample is determined by integrating the total area I enclosed between a physical measurement variable i(t) and a ref ...