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US3685568A
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Method of quenching metal filament in froth
Assignee: United States Steel Corp
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Filing: 1971-03-01
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Granted: 1972-08-22
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Expires: 1991-03-01
Abstract
Abstract A process for directly producing metallic filaments and fibers from molten metal by extruding a stream of the molten metal into a froth quenchant. The froth serves to quickly solidify the molten metal stream without damaging inertial effects, thus making the process ideally suited for metals having a high latent heat of fusion and/or a high surface tension.
Inventors
- 👤 Robert B Pond Sr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:36
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/005; Y; Y10; Y10S; Y10S264/00; Y10S264/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
The method of claim 1 in which said froth is continuously formed over a frothing solution by bubbling compressed gas into said solution.
Claim 2
Dependent Claim
27 words
The method of claim 2 in which said continuously formed froth is caused to rise within a stand pipe counter to the molten metal filaments falling therethrough.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |