Detection device for hazardous materials
USH1297H · kind H · statutory invention registration
4Cited by
0References
7Claims
0Family size
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Key dates
| Filing date | — |
| Grant date | Apr 5, 1994 |
| Priority date | — |
| Expiry date | — |
Classification
- Technology area (CPC —)General
Abstract
A detection device that is activated by the interaction of a hazardous chcal with a coating interactive with said chemical on an optical fiber thereby reducing the amount of light passing through the fiber to a light detector. A combination of optical filters separates the light into a signal beam and a reference beam which after detection, appropriate amplification, and comparison with preset internal signals, activates an alarm means if a predetermined level of contaminant is observed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.