US5629494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogen-less, non-azide gas generants
Assignee: Autoliv ASP Inc
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Filing: 1996-02-29
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Granted: 1997-05-13
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Expires: 2016-02-29
Abstract
Abstract A gas generant composition contains no hydrogen, using as the major fuel component cupric and/or zinc bitetrazole and as a major oxidizer component CuO and/or Fe2O3. A minor fuel component may be a salt of dicyanamide which reduces processing sensitivity of the composition. A minor oxidizer component may be a nitrate, chlorate, or perchlorate salt.
Inventors
- 👤 Michael W. Barnes
- 👤 Robert D. Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:20
CPC Classifications
C; C06; C06D; C06D5/00; C06D5/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
178 words
A hydrogen-less gas generant composition consisting essentially of A) between about 20 and about 40 wt % of a fuel and B) between about 60 and about 80 wt % of B) an oxidizer, said weight percentages of A) and B) being calculated on the total weight of A) plus B), between about 60 and 95 wt % of said fuel A) comprising a fuel component i) selected from the group consisting of cupric bitetrazole, zinc bitetrazole and mixtures thereof, and between about 5 wt % and about 40 wt % of said fuel A) comprising a fuel component ii) selected from the group consisting of cupric dicyanamide, zinc dicyanamide and mixtures thereof, between about 70 and 100 wt % of said oxidizer B) comprising an oxidizer component iii) selected from the group consisting of CuO, Fe 2 O 3 , and mixtures thereof, and up to about 30 wt % of said oxidizer B) comprising an oxidizer component iv) selected from the group consisting of alkali and alkaline metal salts of nitrate, chlorate, perchlorate, and mixtures thereof.
Claim 2
Dependent Claim
178 words
A hydrogen-less gas generant composition consisting essentially of A) between about 20 and about 40 wt % of a fuel and B) between about 60 and about 80 wt % of B) an oxidizer, said weight percentages of A) and B) being calculated on the total weight of A) plus B), between about 60 and 95 wt % of said fuel A) comprising a fuel component i) selected from the group consisting of cupric bitetrazole, zinc bitetrazole and mixtures thereof, and between about 5 wt % and about 40 wt % of said fuel A) comprising a fuel component ii) selected from the group consisting of cupric dicyanamide, zinc dicyanamide and mixtures thereof, between about 70 and 100 wt % of said oxidizer B) comprising an oxidizer component iii) selected from the group consisting of CuO, Fe 2 O 3 , and mixtures thereof, and up to about 30 wt % of said oxidizer B) comprising an oxidizer component iv) selected from the group consisting of alkali and alkaline metal salts of nitrate, chlorate, perchlorate, and mixtures thereof.
Claim 3
Dependent Claim
17 words
A gas generant composition in accordance with claim 1 wherein said fuel component i) is cupric bitetrazole.
Claim 4
Dependent Claim
17 words
A gas generant composition in accordance with claim 1 wherein said fuel component ii) is zinc bitetrazole.
Claim 5
Dependent Claim
17 words
A gas generant composition in accordance with claim 1 wherein said oxidizer component iii) is cupric oxide.
Claim 6
Dependent Claim
16 words
A gas generant composition in accordance with claim 1 wherein fuel component ii) is cupric dicyanamide.
Claim 7
Dependent Claim
16 words
A gas generant composition in accordance with claim 1 wherein fuel component ii) is zinc dicyanamide.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2000-05-12 | 2000-11-11 | 2001-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-05-12 | 2004-11-11 | 2005-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-05-12 | 2008-11-11 | 2009-05-13 | $7700.00 | Window Closed / Lapsed |