US4426207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable ternary cryogenic fuel having density in the gaseous state less than that of air
Assignee: LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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Filing: 1982-03-01
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Granted: 1984-01-17
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Expires: 2002-03-01
Abstract
Abstract A stable cryogenic fuel mixture containing 25 to 30% by volume of acetylene, 61 to 72% by volume of ethylene and 3 to 9% by volume of a C 3 hydrocarbon preferably propylene. This fuel mixture having a density in the gaseous state, which is less than the density of air, is particularly suited for use in welding and assembly operations.
Inventors
- 👤 Maurice Bruni
- 👤 George Duboz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:02
CPC Classifications
C; C10; C10L; C10L3/00; C10L1/00; C10L1/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
64 words
Stable cryogenic ternary fuel having a density in the gaseous state less than that of air, consisting of a mixture of acetylene, ethylene and a hydrocarbon containing three carbon atoms in its molecule, wherein said initial cryogenic mixture contains 25 to 30% by volume of acetylene, 61 to 72% by volume of ethylene and 3 to 9% by volume of the C 3 hydrocarbon.
Claim 2
Dependent Claim
64 words
Stable cryogenic ternary fuel having a density in the gaseous state less than that of air, consisting of a mixture of acetylene, ethylene and a hydrocarbon containing three carbon atoms in its molecule, wherein said initial cryogenic mixture contains 25 to 30% by volume of acetylene, 61 to 72% by volume of ethylene and 3 to 9% by volume of the C 3 hydrocarbon.
Claim 3
Dependent Claim
24 words
Ternary fuel according to claim 1, wherein the hydrocarbon containing three carbon atoms is selected from the group consisting of propane, cyclopropane and propylene.
Claim 4
Dependent Claim
13 words
Ternary fuel according to claim 1, wherein the C 3 hydrocarbon is propylene.
Claim 5
Dependent Claim
22 words
Ternary fuel according to claim 3 wherein the initial cryogenic mixture contains about 26% acetylene, about 69% ethylene and about 5% propylene.
Claim 6
Dependent Claim
19 words
Ternary fuel according to any one of claims 1 to 4, wherein said fuel in the refrigerated liquid state.
Claim 7
Dependent Claim
33 words
Ternary fuel according to any of claims 1 to 4, wherein said fuel is in the compressed gaseous state under pressure of up to 100 bars in containers filled with a porous material.
Claim 8
Dependent Claim
15 words
A cryogenic storage container containing a refrigerated liquid ternary fuel in accordance with claim 5.
Claim 9
Dependent Claim
20 words
A pressurized container containing a porous material and filled with a compressed gaseous ternary fuel in accordance with claim 6.
References Cited (Backward Citations)
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Cited
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Cited
US3713793A
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Cited
US4045189A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-16 | 1987-07-18 | 1988-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-16 | 1991-07-18 | 1992-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-16 | 1995-07-18 | 1996-01-17 | $7700.00 | Window Closed / Lapsed |