US5038867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire protection of cargo spaces
Assignee: Airbus Defence and Space GmbH
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Filing: 1987-05-06
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Granted: 1991-08-13
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Expires: 2007-05-06
Abstract
Abstract Fire protection equipment for estinguishing fires in the cargo space of an aircraft includes two containers for extinguishing evaporating liquid; a common conduit system with nozzles distributes the liquid and is directly connected to one of the containers; the other container is also connected to that conduit system but through a series connection of a water adsorption filter, a solid particle filter, a pressure reducing stage, and a throttle to establish a constant flow rate from the second container into the conduit system, a check valve prevents back flow into the latter container.
Inventors
- 👤 Holger Hindrichs
- 👤 Eckhard Koch
- 👤 Heiko Trey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:53
CPC Classifications
A; A62; A62C; A62C99/00; A62C99/0009; A62C99/0018; A62C3/00; A62C3/07; A62C3/08; A62C35/00; A62C35/58
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
90 words
In a fire protection equipment for extinguishing fires in the cargo space of a vehicle, such as an aircraft, there being a first and a second container for extinguishing medium, the medium evaporating under atmospheric pressure, there being a distributing conduit system connected to the first one of said container and having discharge nozzles, the improvement comprising: said second container being also connected to said conduit system through a series connection of a water adsorption fileter, a solid particle filter, a pressure reducing stage, a throttle, and a check valve.
Claim 2
Dependent Claim
90 words
In a fire protection equipment for extinguishing fires in the cargo space of a vehicle, such as an aircraft, there being a first and a second container for extinguishing medium, the medium evaporating under atmospheric pressure, there being a distributing conduit system connected to the first one of said container and having discharge nozzles, the improvement comprising: said second container being also connected to said conduit system through a series connection of a water adsorption fileter, a solid particle filter, a pressure reducing stage, a throttle, and a check valve.
Claim 3
Dependent Claim
24 words
The improvement as in claim 1, said solid particle filter including organic and in-organic fibers for filtering particles of at least 1.5*10 -5 m.
Claim 4
Dependent Claim
23 words
The improvement as in claim 1, wherein said series circuit establishes a constant flow rate from the second container into the conduit system.
Claim 5
Dependent Claim
28 words
The improvement as in claim 1, including a safety membrane and means for destroying the membrane on command to initiate outflow of fire extinguishing medium from said containers.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-08-12 | 1995-02-11 | 1995-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-12 | 1999-02-11 | 1999-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-12 | 2003-02-11 | 2003-08-13 | $7700.00 | Window Closed / Lapsed |