US2761204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making bars
Assignee: United States Steel Corp
•
Filing: 1951-02-12
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Granted: 1956-09-04
•
Expires: 1971-02-12
Abstract
No abstract record available.
Inventors
- 👤 Bannister Bryant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:33
CPC Classifications
B; B21; B21C; B21C23/00; B21C23/02; B21C23/04; B21C23/08; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4981; Y10T29/49812; Y10T428/00; Y10T428/12; Y10T428/12229; Y10T428/12271; Y10T428/12278
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
THE METHOD OF REDUCING THE AMOUNT OF SCRAP IN PRODUCING FERROUS METAL BARS FROM A COMMERCIAL SIZE ROUND INGOT WHICH COMPRISES CASTING A ROUND INGOT HAVING A DIAMETER OF AT LEAST APPROXIMATELY 26 INCHES AND A LENGTH OF AT LEAST APPROXIMATELY 6 FEET, SEALING THE TOP OF THE INGOT IMMEDIATELY AFTER TEEMING, EQUALIZING THE TEMPERATURE THROUGHOUT THE CAST INGOT, DESCALING THE INGOT, THE FOREGOING STEPS BEING PERFORMED WHILE MAINTAINING THE TEMPERATURE OF THE INGOT AT LEAST AT THE EXTENSION TEMPERATURE, IMMEDIATELY PLACING THE DESCALED INGOT INTO THE CONTAINER OF AN EXTRUSION PRESS WITH THE CAVITY OF THE INGOT ADJACENT THE ENTRY END OF THE CONTAINER, AND EXTRUDING THE INGOT INTO A CONTINUOUS BAR WHILE USING A GLASS-LIKE LUBRICANT AT THE END OF THE INGOT ADJACENT THE DIE END OF THE CONTAINER, SAID EXTRUSION BEING CARRIED OUT BY MOVING A RAM AGAINST THE ENTRY END OF THE INGOT AND FORCING THE FERROUS METAL THROUGH THE DIE, THE EXTRUDING REDUCTION RATE BEING BETWEEN APPROXIMATELY FOUR TO ONE AND SIXTY TO ONE.
Claim 2
Independent Claim
169 words
THE METHOD OF REDUCING THE AMOUNT OF SCRAP IN PRODUCING FERROUS METAL BARS FROM A COMMERCIAL SIZE ROUND INGOT WHICH COMPRISES CASTING A ROUND INGOT HAVING A DIAMETER OF AT LEAST APPROXIMATELY 26 INCHES AND A LENGTH OF AT LEAST APPROXIMATELY 6 FEET, SEALING THE TOP OF THE INGOT IMMEDIATELY AFTER TEEMING, EQUALIZING THE TEMPERATURE THROUGHOUT THE CAST INGOT, DESCALING THE INGOT, THE FOREGOING STEPS BEING PERFORMED WHILE MAINTAINING THE TEMPERATURE OF THE INGOT AT LEAST AT THE EXTENSION TEMPERATURE, IMMEDIATELY PLACING THE DESCALED INGOT INTO THE CONTAINER OF AN EXTRUSION PRESS WITH THE CAVITY OF THE INGOT ADJACENT THE ENTRY END OF THE CONTAINER, AND EXTRUDING THE INGOT INTO A CONTINUOUS BAR WHILE USING A GLASS-LIKE LUBRICANT AT THE END OF THE INGOT ADJACENT THE DIE END OF THE CONTAINER, SAID EXTRUSION BEING CARRIED OUT BY MOVING A RAM AGAINST THE ENTRY END OF THE INGOT AND FORCING THE FERROUS METAL THROUGH THE DIE, THE EXTRUDING REDUCTION RATE BEING BETWEEN APPROXIMATELY FOUR TO ONE AND SIXTY TO ONE.
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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) | 1959-09-04 | 1960-03-05 | 1960-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-04 | 1964-03-05 | 1964-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-04 | 1968-03-05 | 1968-09-04 | $7700.00 | Window Closed / Lapsed |