US4157927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amine-boranes as hydrogen generating propellants
Assignee: United States Department of the Army
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Filing: 1978-03-06
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Granted: 1979-06-12
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Expires: 1998-03-06
Abstract
Abstract The use of a class or compounds known as amine-boranes and their derivati in solid propellants to produce or generate hydrogen or deuterium upon combustion.
Inventors
- 👤 William M. Chew
- 👤 James A. Murfree
- 👤 Pasquale Martignoni
- 👤 Henry A. Nappier
- 👤 Orval E. Ayers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:19
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/02; C01B3/04; C06; C06B; C06B47/00; C06B47/02; C06B47/10; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/36
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
129 words
A solid propellant composition in the form of a compacted solid propellant pellet, said solid propellant producing hydrogen or deuterium from a self-sustaining reaction after said reaction is initiated by a heat source sufficient to initiate said reaction, said solid propellant composition comprising a predetermined molar ratio mixture of a first reactant composition and a second reactant composition, said first reactant being selected from the group consisting of amine-boranes and their derivatives, and said second reactant being selected from the group consisting of LiAlH 4 , NaBH 4 , Fe 2 O 3 and mixtures thereof, said first reactant being present in a mole ratio varying from about 1 to about 25, and said second reactant being present in a mole ratio varying from about 1 to about 2.
Claim 2
Dependent Claim
129 words
A solid propellant composition in the form of a compacted solid propellant pellet, said solid propellant producing hydrogen or deuterium from a self-sustaining reaction after said reaction is initiated by a heat source sufficient to initiate said reaction, said solid propellant composition comprising a predetermined molar ratio mixture of a first reactant composition and a second reactant composition, said first reactant being selected from the group consisting of amine-boranes and their derivatives, and said second reactant being selected from the group consisting of LiAlH 4 , NaBH 4 , Fe 2 O 3 and mixtures thereof, said first reactant being present in a mole ratio varying from about 1 to about 25, and said second reactant being present in a mole ratio varying from about 1 to about 2.
Claim 3
Dependent Claim
38 words
A solid propellant composition as set forth in claim 1, wherein said first reactant is selected from the group consisting of H 3 BNH 3 and H 2 B(NH 3 ) 2 X, wherein X is a halogen.
Claim 4
Dependent Claim
68 words
A solid propellant composition as set forth in claim 1, wherein said first reactant is H 3 BNH 3 and said second reactant is a mixture of Fe 2 O 3 and NaBH 4 present in a molar ratio of 2/3, and wherein said first reactant comprises about 90 weight percent of said propellant composition and said second reactant comprising about 10 weight percent of said propellant composition.
Claim 5
Dependent Claim
44 words
A solid propellant composition as set forth in claim 1, wherein said first reactant is H 2 B(NH 3 ) 2 F, and said second reactant is LLAlH 4 , and said first and second reactants are present in a mole ratio of 1/1.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-06-11 | 1982-12-11 | 1983-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-06-11 | 1986-12-11 | 1987-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-06-11 | 1990-12-11 | 1991-06-12 | $7700.00 | Window Closed / Lapsed |