Method for protecting an area against pollution by using a cloud of water droplets
US5211336A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 1991 |
| Grant date | May 18, 1993 |
| Priority date | — |
| Expiry date | May 23, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B7/0075
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Method for protecting an area, in particular against fire, by emission of a cloud of water droplets, comprising at least two of the three successive stages, in an order which is appropriate to the problem faced: PA1 a first stage, corresponding to remote fire prevention, in which droplets are emitted which are smaller than 100 micrometers, suitable in particular for rehydrating plants, PA1 a second stage, used in proximal prevention, which comprises in addition the emission of droplets of 100 to 300 micrometers, giving a more long lasting mist, PA1 and a third stage, for immediate prevention, in which droplets of 300 to 800 micrometers are added to the previous droplets, for a drizzle effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.