Patent US3933441A successfully refreshed from Google Patents.
US3933441A
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Thin, continuous steel wires
Assignee: Compagnie Generale des Etablissements Michelin SCA
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Filing: 1973-06-11
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Granted: 1976-01-20
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Expires: 1993-06-11
Abstract
Abstract Thin, continuous steel wires are produced by solidification of a jet of liquid steel projected into a cooling fluid. The solidication is initiated and accelerated by the presence of oxygen in the cooling fluid and by selection of the relative amounts of silicon and manganese in the liquid steel so as to provide solid silica as the oxidation product which is principally formed.
Inventors
- 👤 Jean-Marie Massoubre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:12
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/005; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10T; Y10T428/00; Y10T428/12; Y10T428/12431; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
70 words
Thin, continuous steel wires of a diameter between 30 and 400μ having manganese (x) and silicon (y) contents, expressed in percentages by weight with respect to the iron content of the steel, such that for any value of (x) the value for (y) is greater than that given by the equation y = 0.55 x.sup.2 - 0.18x + 0.1 said steel wires having silica as the principal oxidation product therein.
Claim 2
Dependent Claim
70 words
Thin, continuous steel wires of a diameter between 30 and 400μ having manganese (x) and silicon (y) contents, expressed in percentages by weight with respect to the iron content of the steel, such that for any value of (x) the value for (y) is greater than that given by the equation y = 0.55 x.sup.2 - 0.18x + 0.1 said steel wires having silica as the principal oxidation product therein.
Claim 3
Dependent Claim
31 words
Thin, continuous steel wires of a diameter between 30 and 400μ having manganese and silicon contents so selected from the Fe--Si--Mn--O equilibrium diagram that silica is the principal oxidation product therein.
Claim 4
Dependent Claim
31 words
Thin, continuous steel wires of a diameter between 30 and 400μ having manganese and silicon contents so selected from the Fe--Si--Mn--O equilibrium diagram that silica is the principal oxidation product therein.
References Cited (Backward Citations)
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US2825108A
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US3543831A
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US3617230A
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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) | 1979-01-19 | 1979-07-21 | 1980-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-19 | 1983-07-21 | 1984-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-19 | 1987-07-21 | 1988-01-20 | $7700.00 | Window Closed / Lapsed |