US3890174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pyrotechnic composition
Assignee: Individual
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Filing: 1973-11-27
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Granted: 1975-06-17
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Expires: 1993-11-27
Abstract
Abstract A pyrotechnic composition which contains powders of (1) aluminum, (2) metal oxide, and (3) a metal which is iron, copper, silver, niobium, tungsten, or molybdenum, and which also contains (4) a source of gas which is either (a) a gas maintained under a pressure of 1.05 to 10 atmospheres or (b) a fluorocarbon which vaporizes or decomposes when exposed to the heat of the alloying and oxidizing reaction to generate a gas.
Inventors
- 👤 Jr Horace H Helms
- 👤 Alexander G Rosner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:29
CPC Classifications
C; C06; C06B; C06B33/00; C06B33/02; C06D; C06D5/00; C06D5/02; F; F21; F21K; F21K5/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
191 words
A PYROTECHNIC COMPOSITION COMPRISING (1) A MIXTURE OF POWDERS OF (A) ALUMINUM, (B) A METAL OXIDE SELECTED FROM THE GROUP CONSISTING OF FE2O3, FE3O4, CUO, CR2O3, CO3O4, AND MIXTURES THEREOF, AND (C) A METAL SELECTED FROM THE GROUP CONSISTING OF IRON, COPPER, SILVER, NIOBIUM, TUNGSTEM MOLYBDENUM AND MIXTURES THEREOF AND (2) A SOURCE OF GAS SELECTED FROM THE GROUP CONSISTING OF (A) GAS MAINTAINED UNDER A PRESSURE OF 1.05-10 ATMOSPHERES IN A CONTAINER, SAID GAS EXPANDING AND FORCING ITS WAY FROM THE CONTAINER, WHEN EXPOSED TO THE HEAT OF THEALLOYING AND OXIDIZING REACTION, AND (B) A FLUOROCARBON WHICH IS SELECTED FROM THE GROUP CONSISTING OF (A) ONE SOLID SUBSTANCE, (B) A MIXTURE OF SOLID SUBSTANCES, (C) ONE LIQUID SUBSTANCE, (D) A MIXTURE OF LIQUID SUBSTANCES AND (E) MIXTURES THEREOF PROVIDED THATANY SUBSTANCE THAT IS TO BE A SOURCE OF GAS MUST EITHER VAPORIZE TO FORM GAS WHEN EXPOSED TO THE HEAT OF THE ALLOYING AND OXIDIZING REACTION, DECOMPOSE TO FORM GAS WHEN EXPOSED TO THE HEAT OF THE ALLOYING AND OXIDIZING REACTION OR FORM GAS BY BOTH VAPORIZING AND DECOMPOSING WHEN EXPOSED TO THE HEAT OF THE ALLOYING AND OXIDIZING REACTION.
Claim 2
Dependent Claim
191 words
A PYROTECHNIC COMPOSITION COMPRISING (1) A MIXTURE OF POWDERS OF (A) ALUMINUM, (B) A METAL OXIDE SELECTED FROM THE GROUP CONSISTING OF FE2O3, FE3O4, CUO, CR2O3, CO3O4, AND MIXTURES THEREOF, AND (C) A METAL SELECTED FROM THE GROUP CONSISTING OF IRON, COPPER, SILVER, NIOBIUM, TUNGSTEM MOLYBDENUM AND MIXTURES THEREOF AND (2) A SOURCE OF GAS SELECTED FROM THE GROUP CONSISTING OF (A) GAS MAINTAINED UNDER A PRESSURE OF 1.05-10 ATMOSPHERES IN A CONTAINER, SAID GAS EXPANDING AND FORCING ITS WAY FROM THE CONTAINER, WHEN EXPOSED TO THE HEAT OF THEALLOYING AND OXIDIZING REACTION, AND (B) A FLUOROCARBON WHICH IS SELECTED FROM THE GROUP CONSISTING OF (A) ONE SOLID SUBSTANCE, (B) A MIXTURE OF SOLID SUBSTANCES, (C) ONE LIQUID SUBSTANCE, (D) A MIXTURE OF LIQUID SUBSTANCES AND (E) MIXTURES THEREOF PROVIDED THATANY SUBSTANCE THAT IS TO BE A SOURCE OF GAS MUST EITHER VAPORIZE TO FORM GAS WHEN EXPOSED TO THE HEAT OF THE ALLOYING AND OXIDIZING REACTION, DECOMPOSE TO FORM GAS WHEN EXPOSED TO THE HEAT OF THE ALLOYING AND OXIDIZING REACTION OR FORM GAS BY BOTH VAPORIZING AND DECOMPOSING WHEN EXPOSED TO THE HEAT OF THE ALLOYING AND OXIDIZING REACTION.
Claim 3
Dependent Claim
38 words
The composition of claim 1 wherein aluminum constitutes 5-35 weight percent, metal oxide constitutes 20-80 weight percent, the metal constitutes 1-50 weight percent and the source of gas constitutes not more than 20 weight percent of the composition.
Claim 4
Dependent Claim
45 words
The composition of claim 2 wherein the source of the gas comprises a gas maintained under a pressure of 1.05-10 atmospheres in a container, said gas expanding and forcing its way from the container when exposed to the heat of the alloying and oxidizing reaction.
Claim 5
Dependent Claim
24 words
The composition of claim 3 wherein the source of gas is selected from the group consisting of air, nitrogen, inert gases and mixtures thereof.
Claim 6
Dependent Claim
106 words
The composition of claim 1 wherein the source of gas comprises a fluorocarbon selected from the group consisting of (a) one solid substance, (b) a mixture of solid substances, (c) one liquid substance, (d) a mixture of liquid substances and (e) mixtures thereof provided that any substance that is to be a source of gas must either vaporize to form gas when exposed to the heat of the alloying and oxidizing reaction, decompose to form gas when exposed to the heat of the alloying and oxidizing reaction or form gas by both vaporizing and decomposing when exposed to the heat of the alloying and oxidizing reaction.
Claim 7
Dependent Claim
112 words
The composition of claim 2 wherein said source of gas constitutes 1-20 weight percent of the composition comprising a fluorocarbon selected from the group consisting of (a) one solid substance, (b) a mixture of solid substances, (c) one liquid substance, (d) a mixture of liquid substances and (e) mixtures thereof provided that any substance that is to be a source of gas must vaporize to form gas when exposed to the heat of the alloying and oxidizing reaction, decompose to form gas when exposed to the heat of the alloying and oxidizing reaction or form gas by both vaporizing and decomposing when exposed to the heat of the alloying and oxidizing reaction.
Claim 8
Dependent Claim
10 words
The composition of claim 5 wherein the fluorocarbon is polytetrafluoroethylene.
Claim 9
Dependent Claim
10 words
The composition of claim 6 wherein the fluorocarbon is polytetrafluoroethylene.
Claim 10
Dependent Claim
32 words
A pyrotechnic composition comprising a mixture of powders of (1) aluminum, (2) a metal oxide selected from the group consisting of Fe2O3, Fe3O4, CuO, Cr2O3, Co3O4, and mixtures thereof, and (3) molybdenum.
Claim 11
Dependent Claim
32 words
A pyrotechnic composition comprising a mixture of powders of (1) aluminum, (2) a metal oxide selected from the group consisting of Fe2O3, Fe3O4, CuO, Cr2O3, Co3O4, and mixtures thereof, and (3) molybdenum.
Claim 12
Dependent Claim
32 words
A PYROTECHNIC COMPOSITION COMPRISING A MIXTURE OF POWDERS OF (1) ALUMINUM, (2) A METAL OXIDE SELECTED FROM THE GROUP CONSISTING OF FE2O3, FE3O4, CUO, CR2O3, CO3O4, AND MIXTURES THEREOF, AND (3) MOLYBDENUM.
Claim 13
Dependent Claim
32 words
A PYROTECHNIC COMPOSITION COMPRISING A MIXTURE OF POWDERS OF (1) ALUMINUM, (2) A METAL OXIDE SELECTED FROM THE GROUP CONSISTING OF FE2O3, FE3O4, CUO, CR2O3, CO3O4, AND MIXTURES THEREOF, AND (3) MOLYBDENUM.
References Cited (Backward Citations)
US3565706A
Cited
US3695951A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-16 | 1978-12-16 | 1979-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-16 | 1982-12-16 | 1983-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-16 | 1986-12-16 | 1987-06-17 | $7700.00 | Window Closed / Lapsed |