Patent US5197758A successfully refreshed from Google Patents.
US5197758A
Expired / Lapsed
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Non-azide gas generant formulation, method, and apparatus
Assignee: Autoliv ASP Inc
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Filing: 1991-10-09
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Granted: 1993-03-30
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Expires: 2011-10-09
Abstract
Abstract Gas generating compositions or propellants are provided which comprise a non-azide fuel which is a transition metal complex of an aminoarazole. Preferred transition metal complexes are zinc and copper complexes of 5-aminotetrazole and 3-amino-1,2,4-triazole, with the zinc complexes most preferred. The propellant compositions also include a conventional oxidizer, such as potassium nitrate or strontium nitrate. These compositions are useful for generating a nitrogen-containing gas for a variety of applications, especially for inflating air bags in automotive restraint systems, as well as other inflatable devices.
Inventors
- 👤 Gary K. Lund
- 👤 Mikel R. Stevens
- 👤 W. Wayne Edwards
- 👤 Graham C. Shaw, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:36
CPC Classifications
C; C06; C06D; C06D5/00; C06B; C06B43/00; C06D5/06
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
28 words
A solid composition for generating a nitrogen-containing gas including a non-azide fuel and an oxidizer therefor, wherein said non-azide fuel comprises a transition metal complex of an aminoarazole.
Claim 2
Dependent Claim
28 words
A solid composition for generating a nitrogen-containing gas including a non-azide fuel and an oxidizer therefor, wherein said non-azide fuel comprises a transition metal complex of an aminoarazole.
Claim 3
Dependent Claim
29 words
A composition according to claim 1 wherein said aminoarazole is selected from the group consisting of a transition metal complex of 5-aminotetrazole and a transition metal complex of 3-amino-1,2,4-triazole.
Claim 4
Dependent Claim
20 words
A composition according to claim 2 wherein said transition metal is selected from the group consisting of zinc and copper.
Claim 5
Dependent Claim
17 words
A composition according to claim 3 wherein said transitional metal complex is a zinc complex of 5-aminotetrazole.
Claim 6
Dependent Claim
17 words
A composition according to claim 3 wherein said transitional metal complex is a zinc complex of 3-amino-1,2,4-triazole.
Claim 7
Dependent Claim
26 words
A composition according to claim 1 wherein the oxidizer is selected from the group consisting of KNO 3 , Sr(NO 3 ) 2 and mixtures thereof.
Claim 8
Dependent Claim
15 words
A composition according to claim 4 wherein the oxidizer is Sr(NO 3 ) 2 .
Claim 9
Dependent Claim
15 words
A composition according to claim 5 wherein the oxidizer is Sr(NO 3 ) 2 .
Claim 10
Independent Claim
31 words
A method of generating a nitrogen-containing gas comprising igniting a solid composition including a non-azide fuel and an oxidizer therefor, wherein the fuel comprises a transition metal complex of an aminoarazole.
Claim 11
Independent Claim
31 words
A method of generating a nitrogen-containing gas comprising igniting a solid composition including a non-azide fuel and an oxidizer therefor, wherein the fuel comprises a transition metal complex of an aminoarazole.
Claim 12
Dependent Claim
29 words
A method according to claim 9 wherein the aminoarazole is selected from the group consisting of a transition metal complex of 5-aminotetrazole and a transition metal complex of 3-amino-1,2,4-triazole.
Claim 13
Dependent Claim
17 words
A method according to claim 10 wherein said transition metal complex is a zinc complex of 5-aminotetrazole.
Claim 14
Dependent Claim
17 words
A method according to claim 10 wherein said transition metal complex is a zinc complex of 3-amino-1,2,4-triazole.
Claim 15
Dependent Claim
15 words
A method according to claim 11 wherein the oxidizer is Sr(NO 3 ) 2 .
Claim 16
Dependent Claim
15 words
A method according to claim 12 wherein the oxidizer is Sr(NO 3 ) 2 .
Claim 17
Dependent Claim
17 words
A method according to claim 9 further comprising using the gas produced to inflate an air bag.
Claim 18
Dependent Claim
28 words
A method according to claim 15 wherein the aminoarazole is selected from the group consisting of a transition metal complex of 5-aminotetrazole and a transition metal of 3-amino-1,2,4-triazole.
Claim 19
Dependent Claim
17 words
A method according to claim 16 wherein said transition metal complex is a zinc complex of 5-aminotetrazole.
Claim 20
Dependent Claim
17 words
A method according to claim 16 wherein said transition metal complex is a zinc complex of 3-amino-1,2,4-trizaole.
Claim 21
Dependent Claim
26 words
A method according to claim 16 wherein the oxidizer is selected from the group consisting of KNO 3 , Sr(NO 3 ) 2 and mixtures thereof.
Claim 22
Dependent Claim
63 words
An automotive air bag inflator comprising a metal housing having a gas outlet, a solid gas generating composition including a non-azide fuel and an oxidizer therefor disposed within said housing, an igniter disposed within said housing adjacent to said composition, and a gas filtering system disposed between said composition and said outlet, wherein said fuel comprises a transition metal complex of an aminoarazole.
Claim 23
Dependent Claim
63 words
An automotive air bag inflator comprising a metal housing having a gas outlet, a solid gas generating composition including a non-azide fuel and an oxidizer therefor disposed within said housing, an igniter disposed within said housing adjacent to said composition, and a gas filtering system disposed between said composition and said outlet, wherein said fuel comprises a transition metal complex of an aminoarazole.
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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) | 1996-03-29 | 1996-09-28 | 1997-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-03-29 | 2000-09-28 | 2001-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-03-29 | 2004-09-28 | 2005-03-30 | $7700.00 | Window Closed / Lapsed |