Patent US3939018A successfully refreshed from Google Patents.
US3939018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid propellant containing organic perchlorate salt as burning rate accelerator
Assignee: United States Department of the Army
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Filing: 1968-09-20
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Granted: 1976-02-17
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Expires: 1988-09-20
Abstract
Abstract The incorporation of tris(difluoroamino)-methoxyethyl ammonium perchloraten small percentages in conventional composite solid propellant compositions to achieve a marked increase in burning rates.
Inventors
- 👤 David C. Sayles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:10
CPC Classifications
C; C06; C06B; C06B23/00; C06B23/007; C06B43/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
24 words
A composite solid propellant composition comprising up to 15 weight percent of tris(difluoroamino)-methoxyethyl ammonium perchlorate, an inorganic oxidizing agent, and an organic resin binder.
Claim 2
Dependent Claim
24 words
A composite solid propellant composition comprising up to 15 weight percent of tris(difluoroamino)-methoxyethyl ammonium perchlorate, an inorganic oxidizing agent, and an organic resin binder.
Claim 3
Dependent Claim
13 words
The propellant composition of claim 1 wherein said oxidizing agent is ammonium perchlorate.
Claim 4
Dependent Claim
54 words
The propellant composition of claim 2 wherein said weight percentage of tris(difluoroamino)-methoxyethyl ammonium perchlorate is from about 1 percent to about 15 percent, said weight percentage of oxidizing agent is from about 50 percent to about 70 percent, and the weight percentage of said binder is from about 10 to about 20 weight percent.
Claim 5
Dependent Claim
27 words
The propellant composition of claim 3 wherein said propellant composition additionally comprises a powdered metal having a weight percentage of from about 1 to about 18 percent.
References Cited (Backward Citations)
US3346589A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-16 | 1979-08-18 | 1980-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-16 | 1983-08-18 | 1984-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-16 | 1987-08-18 | 1988-02-17 | $7700.00 | Window Closed / Lapsed |