Variable set point all-electric pressure relief valve and control, independent from the automatic cabin pressure control system
US8500526B2 · kind B2 · utility
18Cited by
5References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 12, 2009 |
| Grant date | Aug 6, 2013 |
| Priority date | — |
| Expiry date | Jun 8, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2012
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A system for maintaining a desired cabin pressure in an aircraft includes a cabin-pressure control sub-system; a pressure relief valve for operation in event of failure or malfunction of the subsystem; a pressure relief valve actuator for operating the pressure relief valve; and a pressure relief valve control (PRVC) for producing commands for operation of the pressure relief valve actuator responsively to a first set of signal indicative of aircraft altitude and to presence of cabin-to-ambient pressure differential (ΔP) that varies from a desired ΔP by a predetermined amount.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.