Method for producing metallic filaments having a formed skin
Abstract
Abstract Filaments composed characteristically of iron, useful for example in reinforcing concrete or the like, are produced by spinning an apertured crucible containing a melt of iron base composition, which includes a reactant agent capable of solid compound formation at the temperature of the melt, subjecting the melt to a pressure in order to cause extrusion of interrupted streams of the melt through the crucible apertures into a reactant gas, and chemically combining the reactant agent and the reactant gas at the surfaces of the filaments so formed in order to provide each individual filament with a traveling mold composed of the solid compound during solidification. This traveling mold, for example, is compatible with concrete or the like for secure bonding.
Inventors
- 👤 Harbhajan S Nayar
- 👤 Walter L Finlay
Bibliographic Details
Claims Analysis
Total Claims: 3References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |