US3953261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid monopropellant compositions including hydrazine and methoxylamine hydrochloride
Assignee: United States Department of the Army
•
Filing: 1969-06-18
•
Granted: 1976-04-27
•
Expires: 1989-06-18
Abstract
Abstract The use of methoxylamine hydrochloride (CH 3 ONH 2 . HCl) as an adive to exothermally decomposing liquid monopropellants such as hydrazine and hydrazine water mixtures to lower the freezing point of the monopropellants and thereby render the monopropellants usable in gas generators at very low temperatures.
Inventors
- 👤 William A. Duncan
- 👤 John F. Phillips
- 👤 James A. Murfree, Jr.
- 👤 Walter W. Wharton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:19
CPC Classifications
C; C06; C06B; C06B47/00; C06B47/02; C06B47/08; C06B23/00; C06B23/009
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
49 words
A liquid monopropellant composition of matter adapted for a liquid type gas generator that has a thermal bed to produce gas, said liquid monopropellant composition comprising a solution of hydrazine and methoxylamine hydrochloride, said methoxylamine hydrochloride being present in an amount of about 10 to about 35 weight percent.
Claim 2
Dependent Claim
49 words
A liquid monopropellant composition of matter adapted for a liquid type gas generator that has a thermal bed to produce gas, said liquid monopropellant composition comprising a solution of hydrazine and methoxylamine hydrochloride, said methoxylamine hydrochloride being present in an amount of about 10 to about 35 weight percent.
Claim 3
Dependent Claim
24 words
The composition of matter of claim 1 wherein said methoxylamine hydrochloride is present in an amount of about 30 to about 35 weight percent.
Claim 4
Dependent Claim
30 words
The composition of matter of claim 1 wherein said solution includes water in an amount up to about 20 weight percent in addition to said hydrazine and said methoxylamine hydrochloride.
Claim 5
Dependent Claim
46 words
The composition of matter of claim 3 wherein said methoxylamine hydrochloride is present in an amount of about 25 weight percent, said water is present in an amount of about 10 weight percent and said hydrazine is present in an amount of about 65 weight percent.
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) | 1979-04-27 | 1979-10-27 | 1980-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-27 | 1983-10-27 | 1984-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-27 | 1987-10-27 | 1988-04-27 | $7700.00 | Window Closed / Lapsed |