Patent US3919013A successfully refreshed from Google Patents.
US3919013A
Expired / Lapsed
US
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Use of graphite fibers to augment propellant burning rate
Assignee: Hercules LLC
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Filing: 1971-12-22
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Granted: 1975-11-11
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Expires: 1991-12-22
Abstract
Abstract Solid propellant compositions having graphite fibers dispersed throughout the propellant are provided. The graphite fibers augment the burning rate of the solid propellant.
Inventors
- 👤 Richard Winer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:16
CPC Classifications
C; C06; C06B; C06B47/00; C06B47/14; Y; Y10; Y10S; Y10S149/00; Y10S149/11; Y10S149/114
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
173 words
IN A SLURRY EXPLOSIVE COMPOSITION OF MATTER COMPRISING AT LEAST ONE OXYGEN RELEASING SALT SELECTED FROM THE GROUP CONSISTING OF AMMONIUM NITRITE, CHLORATE AND PERCHLOTATE, ALKALI METAL NITRITES, CHLORATE AND PERCHLORATES, AND ALKALINE EARTH METAL NITRITES, CHLORATES AND PERCHLORATES, WATER, AND AT LEAST ONE FUEL SELECTED FROM THE GROUP CONSISTING OF WATER SLUBLE FUELS, WATER SOLUBLE OR SPARINGLY WATER SOLUBLE NONMETALLIC FUEL AND METALLIC WATER INSOLUBLE FUEL, THE COMBINATION SAID COMPOSITION OF AT LEAST ONE DETONATION SENSITIZING MATERIAL IN DIVIDED FORM AND COMPRISING AT LEAST ONE METALLIC COMPONENT SELECTED FROM THE GROUP CONSISTING OF ALUMINIUM AND ALLOYS RICH IN ALUMINIUM SAID DETONATION SENSITIZING MATERIAL THE IMPROVEMENT WHEREIN THERE IS BONDED TO THE SURFACE OF AT LEAST PART OF SAID METALLIC COMPONENT AT LEAST ONE FURTHER MATERIAL DERIVED AND SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL SALTS OF A RESIN ACID, ALKALINE EARTH SALTS OF A RESIN ACID, HYDROGENATED ROSIN, DEHYDROGENATED ROSIN, DIMERIZED ROSIN AND POLYMRIZED ROSIN AND WHEREIN SAID FURTHER MATERIAL CONSTITUTES FROM 00.01 TO 0.2% W/W OF SAID DETONATION SENSITIZING MATERIAL.
Claim 2
Dependent Claim
173 words
IN A SLURRY EXPLOSIVE COMPOSITION OF MATTER COMPRISING AT LEAST ONE OXYGEN RELEASING SALT SELECTED FROM THE GROUP CONSISTING OF AMMONIUM NITRITE, CHLORATE AND PERCHLOTATE, ALKALI METAL NITRITES, CHLORATE AND PERCHLORATES, AND ALKALINE EARTH METAL NITRITES, CHLORATES AND PERCHLORATES, WATER, AND AT LEAST ONE FUEL SELECTED FROM THE GROUP CONSISTING OF WATER SLUBLE FUELS, WATER SOLUBLE OR SPARINGLY WATER SOLUBLE NONMETALLIC FUEL AND METALLIC WATER INSOLUBLE FUEL, THE COMBINATION SAID COMPOSITION OF AT LEAST ONE DETONATION SENSITIZING MATERIAL IN DIVIDED FORM AND COMPRISING AT LEAST ONE METALLIC COMPONENT SELECTED FROM THE GROUP CONSISTING OF ALUMINIUM AND ALLOYS RICH IN ALUMINIUM SAID DETONATION SENSITIZING MATERIAL THE IMPROVEMENT WHEREIN THERE IS BONDED TO THE SURFACE OF AT LEAST PART OF SAID METALLIC COMPONENT AT LEAST ONE FURTHER MATERIAL DERIVED AND SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL SALTS OF A RESIN ACID, ALKALINE EARTH SALTS OF A RESIN ACID, HYDROGENATED ROSIN, DEHYDROGENATED ROSIN, DIMERIZED ROSIN AND POLYMRIZED ROSIN AND WHEREIN SAID FURTHER MATERIAL CONSTITUTES FROM 00.01 TO 0.2% W/W OF SAID DETONATION SENSITIZING MATERIAL.
Claim 3
Dependent Claim
30 words
The solid propellant composition of claim 1 in which the graphite fibers comprise from about 0.5% to about 10% by weight based on the weight of the solid propellant composition.
Claim 4
Dependent Claim
18 words
The solid propellant composition of claim 1 in which the propellant composition is of the single base type.
Claim 5
Dependent Claim
18 words
The solid propellant composition of claim 1 in which the propellant composition is of the double base type.
Claim 6
Dependent Claim
18 words
The solid propellant composition of claim 1 in which the propellant composition is of the triple base type.
Claim 7
Dependent Claim
17 words
The solid propellant composition of claim 1 in which the propellant composition is of the composite type.
Claim 8
Dependent Claim
24 words
The solid propellant composition of claim 6 in which the composite propellant comprises an inorganic oxidizing agent and a binder prepared from carboxyterminated polybutadiene.
Claim 9
Dependent Claim
15 words
The solid propellant composition of claim 7 in which the oxidizing agent is ammonium perchlorate.
Claim 10
Dependent Claim
35 words
The solid propellant composition of claim 6 in which the oxidizing agent is an organic type oxidizing agent selected from the group consisting of cyclotrimethylene trinitramine, cyclotetramethylene tetranitramine, pentaerythritol tetranitrate, ethylene dinitramine, and mixtures thereof.
Claim 11
Dependent Claim
38 words
The solid propellant composition of claim 1 in which the composition is in the shape of a propellant granule having a longitudinal axis and a subStantial proportion of the graphite fibers are oriented parallel to said longitudinal axis.
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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) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |