Fire resistant shelter
US11859404B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 25, 2020 |
| Grant date | Jan 2, 2024 |
| Priority date | — |
| Expiry date | Feb 5, 2041 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04H9/12
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A fire resistant shelter is provided which controls a temperature of an underground evacuation space in case of a long-lasting fire. A fire resistant shelter comprises a shelter main body, a water supply device, a heat insulating housing, and a drain device. The shelter main body is made of concrete having a thickness of 30 cm and is provided with an evacuation space therein. When a fire breaks out, an evacuee escapes to the evacuation space, closes an underground door, and subsequently opens a valve of a water supply pipe through a remote operation from inside the evacuation space. This supplies water to a heat-insulating space. When water being stored up to a level corresponding to the top end of the evacuation space is confirmed, the supply of the water is stopped. At that time, the water remains at a predetermined level in a ceiling water tank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.