Patent US5848652A successfully refreshed from Google Patents.
US5848652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine fire extinguishment system
Assignee: United States Department of the Air Force
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Filing: 1997-08-27
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Granted: 1998-12-15
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Expires: 2017-08-27
Abstract
Abstract A fire suppression system for the engine compartment of a vehicle is described which includes a remotely controllable throttle valve disposed within the exhaust duct of the engine for selectively diverting exhaust gases through a bypass duct for mixing with the ventilation airflow for the purpose of reducing the oxygen content in the airflow over the engine below a level which will effectively support combustion.
Inventors
- 👤 Joseph M. Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:17
CPC Classifications
A; A62; A62C; A62C3/00; A62C3/07
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
94 words
A fire suppression system for the engine compartment of a vehicle having an engine including an exhaust duct, said fire suppression system comprising: (a) a remotely controllable throttle valve disposed within the exhaust duct of an engine for selectively diverting exhaust gases from said exhaust duct; and (b) a bypass duct operatively connected to said throttle valve for conducting said exhaust gases forwardly of said engine for mixing with the ventilation airflow across said engine and reducing the oxygen content in the airflow over said engine below a level which will effectively support combustion.
Claim 2
Dependent Claim
94 words
A fire suppression system for the engine compartment of a vehicle having an engine including an exhaust duct, said fire suppression system comprising: (a) a remotely controllable throttle valve disposed within the exhaust duct of an engine for selectively diverting exhaust gases from said exhaust duct; and (b) a bypass duct operatively connected to said throttle valve for conducting said exhaust gases forwardly of said engine for mixing with the ventilation airflow across said engine and reducing the oxygen content in the airflow over said engine below a level which will effectively support combustion.
Claim 3
Dependent Claim
17 words
The system of claim 1 wherein said throttle valve comprises a controllable damper or a butterfly valve.
Claim 4
Dependent Claim
27 words
The system of claim 2 further comprising a controller operatively connected to said throttle valve by mechanical or electromechanical linkage for remote operation of said throttle valve.
References Cited (Backward Citations)
US4614237A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-12-14 | 2002-06-15 | 2002-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-12-14 | 2006-06-15 | 2006-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-12-14 | 2010-06-15 | 2010-12-15 | $7700.00 | Window Closed / Lapsed |