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US5629494A Expired / Lapsed US ⏱️ 0.0 years remaining

Hydrogen-less, non-azide gas generants

Assignee: Autoliv ASP Inc
•
Filing: 1996-02-29
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Granted: 1997-05-13
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Expires: 2016-02-29
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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.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
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

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