Protective shelter flow control apparatus
US4558636A · kind A · utility
8Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1984 |
| Grant date | Dec 17, 1985 |
| Priority date | — |
| Expiry date | Apr 30, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S454/902
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A flow control apparatus for a protective shelter including valve means to allow preselected maximum and minimum amounts of air flow into the shelter depending upon ambient contaminant concentrations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.