Methods and apparatus for the control of smoke and fire in buildings
US4463896A · kind A · utility
11Cited by
5References
7Claims
0Family size
Inventor
Key dates
| Filing date | Mar 11, 1982 |
| Grant date | Aug 7, 1984 |
| Priority date | — |
| Expiry date | Mar 11, 2002 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62C3/14
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Smoke and fire control devices and systems are disclosed, including smoke control devices which are responsive to smoke to evacuate smoke and also responsive to elevated temperatures to terminate the evacuation of smoke. Other disclosed smoke control devices comprise valving means which also function as curtain boards, and second valving means which serve to terminate the evacuation of smoke when the temperature of the evacuated smoke and other gases becomes excessive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.