Patent US4601344A successfully refreshed from Google Patents.
US4601344A
Expired / Lapsed
US
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Pyrotechnic fire extinguishing method
Assignee: United States Department of the Navy
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Filing: 1983-09-29
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Granted: 1986-07-22
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Expires: 2003-09-29
Abstract
Abstract A gas generating composition containing glycidyl azide polymer and a high nitrogen content additive selected from the group consisting of guanylaminotetrazole nitrate, bis(triaminoguanidinium)5,5'azotetrazole, ammonium 5-nitraminotetrazole and high bulk density nitro guanidine generates large quantities of nitrogen gas upon burning and can be used to extinguish fires.
Inventors
- 👤 Russell Reed, Jr.
- 👤 May L. Chan
- 👤 Kenneth L. Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:25
CPC Classifications
C; C06; C06D; C06D5/00; C06D5/06; A; A62; A62C; A62C5/00; A62C5/006
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
64 words
A method of extinguishing a fire comprising the steps of: providing a gas generating composition comprises glycidyl azide polymer and a high nitrogen content additive selected from the group consisting of guanylaminotetrazole nitrate, bis(triaminoguanidium) 5,5'-azotetrazole, ammonium 5-nitraminotetrazole and high bulk density nitro guanidine in a reservoir; igniting said composition to generate nitrogen gas; and conveying said nitrogen gas from said reservoir to said fire.
Claim 2
Independent Claim
64 words
A method of extinguishing a fire comprising the steps of: providing a gas generating composition comprises glycidyl azide polymer and a high nitrogen content additive selected from the group consisting of guanylaminotetrazole nitrate, bis(triaminoguanidium) 5,5'-azotetrazole, ammonium 5-nitraminotetrazole and high bulk density nitro guanidine in a reservoir; igniting said composition to generate nitrogen gas; and conveying said nitrogen gas from said reservoir to said fire.
Claim 3
Dependent Claim
19 words
A method of extinguishing a fire according to claim 1 wherein said high nitrogen content additive is guanylaminotetrazole nitrate.
Claim 4
Dependent Claim
18 words
A method of extinguishing a fire according to claim 1 wherein said high nitrogen content is ammonium 5-nitraminotetrazole.
Claim 5
Dependent Claim
22 words
A method of extinguishing a fire according to claim 1 wherein said high nitrogen content additive is high bulk density nitro guanidine.
Claim 6
Dependent Claim
19 words
A method of extinguishing a fire according to claim 1 wherein said high nitrogen content additive is bis(triaminoguanidinium) 5,5'-azotetrazole.
Claim 7
Dependent Claim
30 words
A method of extinguishing a fire according to claim 1 wherein said composition comprises about 5 to 50 weight percent glycidyl azide polymer and 50 to 95 weight percent additive.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-07-21 | 1990-01-20 | 1990-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-21 | 1994-01-20 | 1994-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-21 | 1998-01-20 | 1998-07-22 | $7700.00 | Window Closed / Lapsed |