Method and apparatus for preventing cabin depressurization
US4773307A · kind A · utility
6Cited by
21References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 4, 1987 |
| Grant date | Sep 27, 1988 |
| Priority date | — |
| Expiry date | May 4, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64D13/02
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An environmental control system (ECS) (10) utilizes an override valve (26) to prevent accidental aircraft cabin (16) depressurization. An ECS override valve (26) determines the difference between the pressure of air in a cabin and the pressure of air input to the cabin. If the pressure of the air input to the cabin is less than a given amount more than the pressure of the air in the cabin, the valve interrupts a lower pressure signal provided by the pilot so that the pressure of the air input to the cabin is greater than the given amount more than the pressure of the air in the cabin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.