Fluid proportioning apparatus
US4633895A · kind A · utility
18Cited by
3References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 30, 1985 |
| Grant date | Jan 6, 1987 |
| Priority date | — |
| Expiry date | Dec 30, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2514
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Apparatus is described for admixing a foam-liquid solution with water in a predetermined proportion for use in a foam-water fire fighting system. The arrangement is such that the water supply line of the apparatus takes water out of the fire main and uses this water pressure to work a piston to develop pressure of the foam liquid so as to boost up this foam liquid pressure to a pressure that slightly exceeds the water pressure in the fire main.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.