Patent US5529647A successfully refreshed from Google Patents.
US5529647A
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Gas generant composition for use with aluminum components
Assignee: Autoliv ASP Inc
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Filing: 1993-12-10
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Granted: 1996-06-25
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Expires: 2013-12-10
Abstract
Abstract A gas generant composition adapted for use with airbag restraint systems containing aluminum components includes a fuel which is a tetrazole or a triazole, an oxidizer which is an ammonium, alkali metal and/or alkaline earth metal salt of a chlorate, perchlorate or nitrate, alumina and a binder.
Inventors
- 👤 Robert D. Taylor
- 👤 Thomas M. Deppert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:35
CPC Classifications
C; C06; C06D; C06D5/00; C06D5/06; C06B; C06B43/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
106 words
A gas generant composition comprising between about 2 and about 45 wt % of a fuel which is a tetrazole or triazole compound selected from the group consisting of aminotetrazole, tetrazole, bitetrazole, 1,2,4-triazole-5-one, 3-nitro-1,2,4-triazole-5-one and mixtures thereof, between about 50 and about 75 wt % of an oxidizer selected from the group consisting of ammonium, alkali metal and alkaline earth metal chlorates, perchlorates, nitrates, transition metal oxides, and mixtures thereof, between about 0.5 and about 30 wt % of alumina fibers, and between about 1 and about 10 wt % of a binder, said gas generant composition containing no more than about 1 wt % silica.
Claim 2
Dependent Claim
106 words
A gas generant composition comprising between about 2 and about 45 wt % of a fuel which is a tetrazole or triazole compound selected from the group consisting of aminotetrazole, tetrazole, bitetrazole, 1,2,4-triazole-5-one, 3-nitro-1,2,4-triazole-5-one and mixtures thereof, between about 50 and about 75 wt % of an oxidizer selected from the group consisting of ammonium, alkali metal and alkaline earth metal chlorates, perchlorates, nitrates, transition metal oxides, and mixtures thereof, between about 0.5 and about 30 wt % of alumina fibers, and between about 1 and about 10 wt % of a binder, said gas generant composition containing no more than about 1 wt % silica.
Claim 3
Dependent Claim
37 words
A generant composition according to claim 1 wherein said binder is selected from the group consisting of molybdenum disulfide, graphite, polytetrafluoroethylene, vinyl fluoride/hexafluoropropylene copolymer, nitrocellulose, polysaccharides, polyvinylpyrrolidones, polycarbonates, sodium silicate, calcium stearate, magnesium stearate and mixtures thereof.
Claim 4
Dependent Claim
21 words
A gas generant according to claim 1 wherein said binder is selected from the group consisting of molybdenum disulfide and polycarbonates.
Claim 5
Dependent Claim
29 words
A gas generant composition according to claim 1 wherein sodium nitrate is present as an oxidizer at a level of at least about 1.0 wt % of said composition.
Claim 6
Dependent Claim
38 words
A gas generant composition according to claim 1 further containing between about 1 and about 10 wt % of a coolant selected from the group consisting of alkali metal and alkaline earth metal carbonates, oxalates and mixtures thereof.
Claim 7
Dependent Claim
21 words
A gas generant composition according to claim 1 further containing between about 1 and about 10 wt % of graphite fibers.
Claim 8
Dependent Claim
10 words
A gas generant according to claim 1 containing no silica.
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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) | 1999-06-25 | 1999-12-25 | 2000-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-06-25 | 2003-12-25 | 2004-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-06-25 | 2007-12-25 | 2008-06-25 | $7700.00 | Window Closed / Lapsed |