Evaporative foam risers with exothermic topping
US7270171B2 · kind B2 · utility
0Cited by
12References
12Claims
0Family size
Inventors
Key dates
| Filing date | May 26, 2004 |
| Grant date | Sep 18, 2007 |
| Priority date | — |
| Expiry date | Aug 19, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22C9/088
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
This invention consists of the use of an evaporative foam riser made with expanded polystyrene and with a cavity on top that contains an exothermic mixture. The reaction of the exothermic material, which is set off when it comes in contact with the metal, prolongs the solidification time of the riser thus rendering it more effective.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.