Emergency ventilation system for biological/chemical contamination
US5979565A · kind A · utility
14Cited by
9References
20Claims
0Family size
Inventors
Key dates
| Filing date | Mar 3, 1999 |
| Grant date | Nov 9, 1999 |
| Priority date | — |
| Expiry date | Mar 3, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62C37/44
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A dual-emergency response system includes a common supply line that selectively conveys a fire extinguishing fluid to extinguish a fire and conveys life-sustaining air to displace air contaminated by biological or chemical toxins. A valve that distinguishes between the fire extinguishing fluid and the life-sustaining air opens to convey the air, but closes to prevent the fire extinguishing fluid from escaping. The valve is installed alongside an overhead spray nozzle of a fire sprinkler system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.