Fire protection plate consisting of two metal sheets enclosing a flat space under a reduced pressure useful for retarding the progress of fire
Patents
| Language: |
Немецкий |
| Type: |
Invention |
| Number |
DE 19840990 C1 |
| Request number: |
19840990.7-44 |
| Request date: |
Sep 8, 1998 |
| patent.field.start_date: |
|
| Registration date: |
Sep 30, 1999 |
| patent.field.request_publication_date: |
|
A fire protection plate consisting of two metal sheets (1, 2) and support elements enclosing a flat space (5) under a reduced pressure is characterized in that at least one of these sheets is provided with a layer (3, 4) of material which - at a normal working temperature - physically or chemically stores water, and releases it as steam at elevated temperatures.