US3740947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hypergolic propellants
Assignee: METER F VAN
•
Filing: 1972-08-04
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Granted: 1973-06-26
•
Expires: 1992-08-04
Abstract
Abstract A method for bringing about the auto-ignition of dicyanfuroxan or dicyanofurazan by bringing these compounds in contact with hydrazine. Monomethylhydrazine, unsymmetrical dimethyl hydrazine, piperizine, piperdine or diethylamine. The resultant formulation provides an effective hypergolic bipropellant system for use in the propulsion of rockets.
Inventors
- 👤 D Denson
- 👤 Meter F Van
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:17
CPC Classifications
C; C06; C06B; C06B43/00; C06B47/00; C06B47/02; C06B47/08; C06D; C06D5/00; C06D5/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
17 words
A method in accordance with claim 1 wherein said contact is brought about within an inert atmosphere.
Claim 2
Dependent Claim
29 words
A method in accordance with claim 2 wherein said contact is brought about within an inert atmosphere of nitrogen at pressures within the range of 13 and 1000 psi.
Claim 3
Dependent Claim
13 words
A method in accordance with claim 1 wherein dicyanofuroxan is contacted with hydrazine.
Claim 4
Dependent Claim
20 words
A method in accordance with claim 1 wherein dicyanofuroxan is contacted with an equi-proportional mixture of hydrazine and unsymmetrical dimethylhydrazine.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |