Patent US3986908A successfully refreshed from Google Patents.
US3986908A
Expired / Lapsed
US
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Composite propellants with a cellulose acetate binder
Assignee: Societe Nationale des Poudres et Explosifs
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Filing: 1973-06-25
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Granted: 1976-10-19
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Expires: 1993-06-25
Abstract
Abstract A composite propellant comprises, by weight: A. from 78 to 92% of an oxidizing agent which is at least one of alkali metal, alkaline earth metal and ammonium chlorates and perchlorates, B. from 7.9 to 17.2% of an organic binder which contains oxygen but not nitrogen, and C. from 0.1 to 0.8% of a carbon-containing combustion regulator. This composite propellant is useful as a gas generator for inflatable cushion protection devices because the gaseous combustion products are substantially free from toxic gases.
Inventors
- 👤 Robert O. Grebert
- 👤 Jacques Picard
- 👤 Jean L. Tranchant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:20
CPC Classifications
C; C06; C06B; C06B45/00; C06B45/04; C06B45/06; C06B45/10; C06B23/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
84 words
A composite propellant, which consists essentially of, by weight: a. about 80 to about 92 parts of potassium perchlorate, b. about 8.5 to about 17 parts of cellulose triacetate, c. about 0.15 to about 0.5 parts of acetylene black, d. about 0.5 to about 2 parts of aluminium powder, and e. about 1 to about 3 parts of a plasticiser, the ingredients being in such amounts that said propellant produces combustion gases free of nitrogen oxides and containing less than 0.05% of carbon monoxide.
Claim 2
Dependent Claim
84 words
A composite propellant, which consists essentially of, by weight: a. about 80 to about 92 parts of potassium perchlorate, b. about 8.5 to about 17 parts of cellulose triacetate, c. about 0.15 to about 0.5 parts of acetylene black, d. about 0.5 to about 2 parts of aluminium powder, and e. about 1 to about 3 parts of a plasticiser, the ingredients being in such amounts that said propellant produces combustion gases free of nitrogen oxides and containing less than 0.05% of carbon monoxide.
Claim 3
Dependent Claim
58 words
A composite propellant as set forth in claim 1, which consists essentially of, by weight: a. about 88 parts of potassium perchlorate with a particle size of about 16 microns, b. about 10 parts of cellulose triacetate, c. about 0.2 parts of acetylene black, d. about 1 part of aluminium powder, and e. about 2.5 parts of triacetin.
References Cited (Backward Citations)
US3126304A
Cited
US3020180A
Cited
US3665862A
Cited
US3161550A
Cited
US3197349A
Cited
US3453156A
Cited
US3833432A
Cited
US3663036A
Cited
US3692495A
Cited
US3723205A
Cited
US3773351A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-19 | 1980-04-19 | 1980-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-19 | 1984-04-19 | 1984-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-19 | 1988-04-19 | 1988-10-19 | $7700.00 | Window Closed / Lapsed |