Patent US3270409A successfully refreshed from Google Patents.
US3270409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of flat shapes by the hot rolling of metal powders
Assignee: Individual
•
Filing: 1963-02-19
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Granted: 1966-09-06
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Expires: 1983-02-19
Abstract
No abstract record available.
Inventors
- 👤 Nicholas J Grant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:13
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A METHOD FOR CONTINUOUSLY HOT CONSOLIDATING METAL POWDERS INTO WROUGHT ENLONGATED FLAT SHAPES WHICH COMPRISES CONTINUOUSLY GRAVIMETRICALLY FEEDING FREE FLOWING HOT COARSE METAL POWDER OF MELTING POINT ABOVE 1100* C. TO THE NIP OF A PAIR OF ROLLS HAVING AN EFFECTIVE ROLL GAP, SAID POWDER BEING FED AT A TEMPERATURE ABOVE THE MINMUM RECRYSTALLIZATION TEMPERATURE OF THE METAL AND HAVING A SHAPE WHICH INSURES FREE FLOWABILITY AND A RELATIVELY HIGH APPARENT DENSITY AT SAID TEMPERATURE, CONTINUOUSLY MAINTAINING A RESERVOIR OF THE FREE FLOWING HOT METAL POWDER AGAINST THE METAL DRAWN INTO THE GRIPPING ZONE OF THE ROLLS SUFFICIENT TO CONTINUOUSLY FEED METAL INTO THE GRIPPING ZONE, THE SURFACE CHARACTERISTICS OF THE ROLLS RELATIVE TO THE METAL POWDER BEING SUCH AS TO PROVIDE A GRIPPING ANGLE WITH THE METAL CORRESPONDING TO A COEFFICIENT
Claim 2
Independent Claim
132 words
A METHOD FOR CONTINUOUSLY HOT CONSOLIDATING METAL POWDERS INTO WROUGHT ENLONGATED FLAT SHAPES WHICH COMPRISES CONTINUOUSLY GRAVIMETRICALLY FEEDING FREE FLOWING HOT COARSE METAL POWDER OF MELTING POINT ABOVE 1100* C. TO THE NIP OF A PAIR OF ROLLS HAVING AN EFFECTIVE ROLL GAP, SAID POWDER BEING FED AT A TEMPERATURE ABOVE THE MINMUM RECRYSTALLIZATION TEMPERATURE OF THE METAL AND HAVING A SHAPE WHICH INSURES FREE FLOWABILITY AND A RELATIVELY HIGH APPARENT DENSITY AT SAID TEMPERATURE, CONTINUOUSLY MAINTAINING A RESERVOIR OF THE FREE FLOWING HOT METAL POWDER AGAINST THE METAL DRAWN INTO THE GRIPPING ZONE OF THE ROLLS SUFFICIENT TO CONTINUOUSLY FEED METAL INTO THE GRIPPING ZONE, THE SURFACE CHARACTERISTICS OF THE ROLLS RELATIVE TO THE METAL POWDER BEING SUCH AS TO PROVIDE A GRIPPING ANGLE WITH THE METAL CORRESPONDING TO A COEFFICIENT
References Cited (Backward Citations)
US2383766A
Cited
US2457861A
Cited
US2758336A
Cited
US2935402A
Cited
US2882554A
Cited
US3146099A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |