1976-12-27
1979-02-20
Michell, Robert W.
Surgery
Truss
Perineal
73 27R, 73198, A61B 500
Patent
active
041401069
ABSTRACT:
A drunkometer in which the rate of airflow toward an alcohol vapor sensing device in an input channel is sensed mechanically or electrically, and a resulting flow signal is integrated. The direction of airflow in the input channel is also sensed either by photoelectric means or by a negative-temperature-coefficient resistance and an error signal is furnished if the direction of flow corresponds to inhaled breath. A validity signal signifying that the measured value is a value representative of the concentration of alcohol in the bloodstream is furnished if the integrated signal representing the total exhaled air volume exceeds a predetermined minimum value before an error signal is furnished.
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Berman Hans
Jaworski Francis J.
Michell Robert W.
SACHS-Systemtechnik GmbH
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