US5084118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ignition composition for inflator gas generators
Assignee: Automotive Systems Laboratory Inc
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Filing: 1990-10-23
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Granted: 1992-01-28
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Expires: 2010-10-23
Abstract
Abstract An autoigniting composition for the gas generator of a vehicle occupant restraint system that is thermally stable at temperatures up to 110° C., will not autoignite at 150° C., but when heated to approximately 177° C. will undergo rapid autoignition.
Inventors
- 👤 Donald R. Poole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:25
CPC Classifications
C; C06; C06B; C06B29/00; C06B29/02; C06B29/16; C06C; C06C9/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
46 words
An autoigniting composition for the gas generator of a vehicle occupant restraint system comprising a mixture of from about 40% to 67% by weight of sodium chlorate, from about 16.5% to 40% by weight of 5-aminotetrazole, and from about 11.3% to 20% by weight of 2,4-dinitrophenylhydrazone.
Claim 2
Dependent Claim
46 words
An autoigniting composition for the gas generator of a vehicle occupant restraint system comprising a mixture of from about 40% to 67% by weight of sodium chlorate, from about 16.5% to 40% by weight of 5-aminotetrazole, and from about 11.3% to 20% by weight of 2,4-dinitrophenylhydrazone.
Claim 3
Dependent Claim
37 words
An autoigniting composition for the gas generator of a vehicle occupant restraint system comprising a mixture of about 60% by weight of potassium chlorate, about 20% by weight of 5-aminotetrazole, and about 20% by weight of 2,4-dinitrophenylhydrazone.
Claim 4
Dependent Claim
37 words
An autoigniting composition for the gas generator of a vehicle occupant restraint system comprising a mixture of about 60% by weight of potassium chlorate, about 20% by weight of 5-aminotetrazole, and about 20% by weight of 2,4-dinitrophenylhydrazone.
Claim 5
Dependent Claim
19 words
The composition of claim 2 including 4% to 10% by weight of a polycarbonate resin dissolved in methylene chloride.
Claim 6
Dependent Claim
17 words
The composition of claim 2 including 4% to 10% by weight of thermoplastic rubber dissolved in toluene.
Claim 7
Dependent Claim
58 words
An autoigniting composition for the gas generator of a vehicle occupant restraint system comprising a mixture of about 65% by weight of potassium chlorate, about 16.5% by weight of 5-aminotetrazole, about 16.5% by weight of 2,4-dinitrophenylhydrazone, and about 2% to 4% by weight of a metal powder selected from the group consisting of titanium, zirconium, boron and aluminum.
Claim 8
Dependent Claim
58 words
An autoigniting composition for the gas generator of a vehicle occupant restraint system comprising a mixture of about 65% by weight of potassium chlorate, about 16.5% by weight of 5-aminotetrazole, about 16.5% by weight of 2,4-dinitrophenylhydrazone, and about 2% to 4% by weight of a metal powder selected from the group consisting of titanium, zirconium, boron and aluminum.
Claim 9
Dependent Claim
57 words
An autoignition composition for the gas generator of a vehicle occupant restraint system comprising a mixture of from about 16% to 40% by weight 5-aminotetrazole, from about 11% to 40% by weight, 2,4-dinitrophenylhydrazone, and from about 40% to 67% by weight of an oxidizer selected from the group consisting of alkali metal or alkaline earth metal chlorates.
Claim 10
Dependent Claim
57 words
An autoignition composition for the gas generator of a vehicle occupant restraint system comprising a mixture of from about 16% to 40% by weight 5-aminotetrazole, from about 11% to 40% by weight, 2,4-dinitrophenylhydrazone, and from about 40% to 67% by weight of an oxidizer selected from the group consisting of alkali metal or alkaline earth metal chlorates.
Claim 11
Dependent Claim
74 words
An autoignition composition for the gas generator of a vehicle occupant restraint system comprising a mixture of from about 16% to 40% by weight 5-aminotetrazole, from about 11% to 40% by weight of an active material selected from the group consisting of the aldehyde or ketone hydrazone derivatives of 2,4-dinitrophenylhydrazone and from about 40% to 67% by weight of an oxidizer selected from the group consisting of alkali metal or alkaline earth metal chlorates.
Claim 12
Dependent Claim
74 words
An autoignition composition for the gas generator of a vehicle occupant restraint system comprising a mixture of from about 16% to 40% by weight 5-aminotetrazole, from about 11% to 40% by weight of an active material selected from the group consisting of the aldehyde or ketone hydrazone derivatives of 2,4-dinitrophenylhydrazone and from about 40% to 67% by weight of an oxidizer selected from the group consisting of alkali metal or alkaline earth metal chlorates.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-01-27 | 1995-07-29 | 1996-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-27 | 1999-07-29 | 2000-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-27 | 2003-07-29 | 2004-01-28 | $7700.00 | Window Closed / Lapsed |