Gaseous detection system
US5369977A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 24, 1994 |
| Grant date | Dec 6, 1994 |
| Priority date | — |
| Expiry date | Jan 24, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/0006
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A gaseous detection system for detecting the existence of a certain gas and further detecting a certain level or percentage of that certain gas within a prescribed environment. An example is the use of the gas detection system in a motor vehicle or elsewhere to determine when the driver of the motor vehicle may be driving under the influence of alcohol, and alternatively, for providing signals that may be used for evidentiary purposes of the alcohol content in the breath of the driver. The system includes a sensor unit for sensing ethanol in the atmospheric contents of the test person's breath and utilizing fresh air and a reference gas to determine the amount, if any, of blood-alcohol content of a person for evidentiary or other purposes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.