US4057441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid propellant with burning rate catalyst
Assignee: ATK Launch Systems LLC
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Filing: 1976-03-29
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Granted: 1977-11-08
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Expires: 1996-03-29
Abstract
Abstract Finely divided cupric sulfide increases the burning rate, and reduces the pressure exponent of solid propellant compositions.
Inventors
- 👤 Richard A. Biddle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:52
CPC Classifications
C; C06; C06B; C06B45/00; C06B45/04; C06B45/06; C06B45/10; C06B23/00; C06B23/007; Y; Y10; Y10S; Y10S149/00; Y10S149/11
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
23 words
A solid propellant composition comprising a hydroxy terminated polybutadiene based binder component, an oxygen containing inorganic oxidizer component, and finely divided cupric sulfide.
Claim 2
Dependent Claim
23 words
A solid propellant composition comprising a hydroxy terminated polybutadiene based binder component, an oxygen containing inorganic oxidizer component, and finely divided cupric sulfide.
Claim 3
Dependent Claim
14 words
The propellant composition of claim 1 wherein the inorganic oxidizer component is ammonium perchlorate.
Claim 4
Dependent Claim
19 words
The propellant composition of claim 1 wherein the cupric sulfide is of an average particle size of about 4μ.
Claim 5
Dependent Claim
19 words
The propellant composition of claim 2 wherein the cupric sulfide is of an average particle size of about 4μ.
Claim 6
Dependent Claim
81 words
A process for preparing a solid propellant composition having increased burning rate and a reduced pressure exponent, said propellant composition comprising a hydroxy terminated polybutadiene based binder component, and an oxygen containing inorganic oxidizer component, which comprises a. adding to and mixing with said propellant composition, while said propellant composition is in an uncured condition, from 0.1% to 1.0% of final propellant weight of finely divided cupric sulfide; and b. curing said uncured cupric sulfide containing propellant composition of step a.
Claim 7
Dependent Claim
81 words
A process for preparing a solid propellant composition having increased burning rate and a reduced pressure exponent, said propellant composition comprising a hydroxy terminated polybutadiene based binder component, and an oxygen containing inorganic oxidizer component, which comprises a. adding to and mixing with said propellant composition, while said propellant composition is in an uncured condition, from 0.1% to 1.0% of final propellant weight of finely divided cupric sulfide; and b. curing said uncured cupric sulfide containing propellant composition of step a.
References Cited (Backward Citations)
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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) | 1980-11-07 | 1981-05-09 | 1981-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-07 | 1985-05-09 | 1985-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-07 | 1989-05-09 | 1989-11-08 | $7700.00 | Window Closed / Lapsed |