Patent US2531819A successfully refreshed from Google Patents.
US3668873A
Expired / Lapsed
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Bipropellant rocket process using nitridable fuel
Assignee: Dow Chemical Co
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Filing: 1959-10-14
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Granted: 1972-06-13
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Expires: 1979-10-14
Abstract
Abstract 1. The process which comprises burning in a self-sustaining manner and within a rocket combusion chamber having a directional outlet to provide thrust A. A NITRIDABLE FUEL WITH B. AN OXIDIZING NITROGEN SOURCE MATERIAL WHICH SUPPLIES REACTIVE NITROGEN TO SAID FUEL THEREBY EVOLVING REACTION PRODUCTS CONTAINING NITRIDES AND FREE HYDROGEN, SAID NITROGEN SOURCE MATERIAL BEING SELECTED FROM THE GROUP CONSISTING OF GUANIDINE, 1,6-DIAMINO-5-GUANIDINE, 1,4-DIAMINO-DIGUANIDINE TRIAMINOGUANIDINE, 5-AMINO-TETRAZOLE AND HYDROXYLAMINE.
Inventors
- 👤 William C Bauman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:09
CPC Classifications
C; C06; C06B; C06B27/00; C06B25/00; C06B25/34; C06B43/00; C06B47/00; C06B47/02; C06B47/08; C06B47/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
66 words
THE PROCESS WHICH COMPRISES BURNING IN A SELF-SUSTAINING MANNER AND WITHIN A ROCKET COMBUSTION CHAMBER HAVING A DIRECTIONAL OUTLET TO PROVIDE THRUST A. A NITRIDABLE FUEL WITH B. AN OXIDIZING NITROGEN SOURCE MATERIAL WHICH SUPPLIES REACTIVE NITROGEN TO SAID FUEL THEREBY EVOLVING REACTION PRODUCTS CONTAINING NITRIDES AND FREE HYDROGEN, SAID NITROGEN SOURCE MATERIAL BEING SELECTED FROM THE GROUP CONSISTING OF GUANIDINE, 1,6-DIAMINO-5-GUANIDINE, 1,4DIAMINO-DIGUANIDINE TRIAMIOGUANIDINE,5-AMINOTETRAZOLE AND HYDROXYLAMINE.
Claim 2
Dependent Claim
66 words
THE PROCESS WHICH COMPRISES BURNING IN A SELF-SUSTAINING MANNER AND WITHIN A ROCKET COMBUSTION CHAMBER HAVING A DIRECTIONAL OUTLET TO PROVIDE THRUST A. A NITRIDABLE FUEL WITH B. AN OXIDIZING NITROGEN SOURCE MATERIAL WHICH SUPPLIES REACTIVE NITROGEN TO SAID FUEL THEREBY EVOLVING REACTION PRODUCTS CONTAINING NITRIDES AND FREE HYDROGEN, SAID NITROGEN SOURCE MATERIAL BEING SELECTED FROM THE GROUP CONSISTING OF GUANIDINE, 1,6-DIAMINO-5-GUANIDINE, 1,4DIAMINO-DIGUANIDINE TRIAMIOGUANIDINE,5-AMINOTETRAZOLE AND HYDROXYLAMINE.
Claim 3
Dependent Claim
23 words
A method as in claim 1 wherein the oxidizing nitrogen source material is stabilized in the form of a salt of an acid.
Claim 4
Dependent Claim
19 words
A method as in claim 1 wherein the oxidizing nitrogen source material is guanidine or an aminated derivative thereof.
Claim 5
Dependent Claim
14 words
A method as in claim 1 wherein the oxidizing nitrogen source material is 5-amino-tetrazole.
Claim 6
Dependent Claim
14 words
A method as in claim 1 wherein the oxidizing nitrogen source material is hydroxylamine.
Claim 7
Dependent Claim
35 words
A method as in claim 1 wherein the nitridable fuel is selected from the group consisting lithium, magnesium of beryllium, boron, aluminum, titanium, diborane, pentaborane, decaborane, aluminum hydride, titanium hydride, beryllium borohydride and aluminum borohydride.
References Cited (Backward Citations)
US2573471A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |