US4836255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azide gas generant formulations
Assignee: Autoliv ASP Inc
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Filing: 1988-02-19
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Granted: 1989-06-06
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Expires: 2008-02-19
Abstract
Abstract A gas generant composition especially adapted for inflating automotive airbags in the event of a vehicle collision to protect the occupants of the vehicle from injury. The composition consists essentially of 65-74% alkali metal azide; 10-28% ferric oxide; 6-16% sodium nitrate; 0.1-2% fumed silica; and 0-2% molybdenum disulfide. The composition burns at from about 1.2 to about 1.7 inches per second (about 3.0 to about 4.3 cm/sec).
Inventors
- 👤 Fred E. Schneiter
- 👤 Robert D. Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:06
CPC Classifications
C; C06; C06D; C06D5/00; C06B; C06B35/00; C06D5/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
An airbag gas generant composition consisting essentially of A. from 65 to 74 percent by weight of an alkali metal azide; B. from 10 to 28 percent by weight ferric oxide; C. from 5 to 16 percent by weight sodium nitrate; D. from 0.1 to 2 percent by weight hydrophobic fumed silica; and E. from 0 to 2 percent by weight molybdenum disulfide; said composition having a burning rate of from about 3.0 to about 4.3 centimeters per second.
Claim 2
Dependent Claim
79 words
An airbag gas generant composition consisting essentially of A. from 65 to 74 percent by weight of an alkali metal azide; B. from 10 to 28 percent by weight ferric oxide; C. from 5 to 16 percent by weight sodium nitrate; D. from 0.1 to 2 percent by weight hydrophobic fumed silica; and E. from 0 to 2 percent by weight molybdenum disulfide; said composition having a burning rate of from about 3.0 to about 4.3 centimeters per second.
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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) | 1992-06-05 | 1992-12-05 | 1993-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-05 | 1996-12-05 | 1997-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-05 | 2000-12-05 | 2001-06-06 | $7700.00 | Window Closed / Lapsed |