Patent US519097A successfully refreshed from Google Patents.
US3986907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Illuminating flare composition containing tetranitrocarbazole
Assignee: ATK Launch Systems LLC
•
Filing: 1975-03-07
•
Granted: 1976-10-19
•
Expires: 1995-03-07
Abstract
Abstract The burning rate of an illuminant composition adapted to be used in an illuminating flare and comprising magnesium granules, an inorganic oxidizer and an organic polymeric binder is increased by incorporating therein 0.1 to 5% by weight of tetranitrocarbazole as a burning rate modifier. The incorporation of the tetranitrocarbazole burning rate modifier permits the attainment of a given light intensity with a lesser proportion of magnesium in the composition.
Inventors
- 👤 David R. Dillehay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:39
CPC Classifications
C; C06; C06B; C06B23/00; C06B23/007; C06B33/00; C06B33/02; C06C; C06C15/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
33 words
In an illuminant composition comprising magnesium powder, a finely divided inorganic oxidizer, and an organic binder, the improvement which comprises a small amount of tetranitrocarbazole in said composition as a burning rate modifier.
Claim 2
Dependent Claim
33 words
In an illuminant composition comprising magnesium powder, a finely divided inorganic oxidizer, and an organic binder, the improvement which comprises a small amount of tetranitrocarbazole in said composition as a burning rate modifier.
Claim 3
Dependent Claim
20 words
A composition according to claim 1 wherein said tetranitrocarbazole is present to the extent of 0.1 to 5% by weight.
Claim 4
Dependent Claim
44 words
An illuminant composition consisting essentially of 35 to 70% by weight magnesium, 30 to 65% inorganic oxidizer selected from the group consisting of sodium nitrite and alkali metal chlorates, perchlorates and nitrates, 4 to 10% of organic binder and 0.1 to 5% of tetranitrocarbazole.
Claim 5
Dependent Claim
44 words
An illuminant composition consisting essentially of 35 to 70% by weight magnesium, 30 to 65% inorganic oxidizer selected from the group consisting of sodium nitrite and alkali metal chlorates, perchlorates and nitrates, 4 to 10% of organic binder and 0.1 to 5% of tetranitrocarbazole.
Claim 6
Dependent Claim
13 words
An illuminant composition according to claim 3 wherein the oxidizer is sodium nitrate.
Claim 7
Dependent Claim
13 words
An illuminant composition according to claim 3 wherein the oxidizer is sodium nitrite.
Claim 8
Dependent Claim
22 words
An illuminant composition according to claim 3 wherein the binder is a reaction product of mercaptanterminated liquid polysulfide polymer and a polyepoxide.
References Cited (Backward Citations)
US3520742A
Cited
US3752703A
Cited
US3497404A
Cited
US3720553A
Cited
US3605624A
Cited
US3650856A
Cited
US3673014A
Cited
US3728172A
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 |