Method for foaming metals
Abstract
Abstract FIBER REINFORCED FOAMED METAL IS PRODUCED BY FEEDING TO A FOAMING VESSEL A COMPOSITION OF REINFORCING FIBERS, A FOAMING AGENT AND A METAL MELTING BELOW THE GAS RELEASE TEMPERATURE OF THIS AGENT. THIS COMPOSITION CAN BE PREPARED AND FED CONTINUOUSLY FORM A COMPOUNDING VESSEL, PREFERABLY CONNECTED WITH THE FOAMING VESSEL, OR THE COMPONENTS CAN BE ADDED SEPARATELY AND DIRECTLY IN BATCH OPERATION. IN THE FOAMING VESSEL THEY ARE COMBINED WITH THE REMAINING COMPONENTS OF THE FINAL COMPOSITION AND BROUGHT TO FOAMING TEMPERATURE. ALL MIXING AFTER THE FIBERS ARE ADDED IS DONE WITH ROLLS WITH AMPLE CLEARANCES, AS OTHERWISE THE FIBERS WILL BE DAMAGED. ROLLERS WITH BOTH AXIAL AND PLANETARY MOTION ARE PREFERRED.
Inventors
- 👤 Johan Bjorksten
- 👤 Edward J Rock
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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) | 1975-12-26 | 1976-06-26 | 1976-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-26 | 1980-06-26 | 1980-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-26 | 1984-06-26 | 1984-12-26 | $7700.00 | Window Closed / Lapsed |