Patent US3287773A successfully refreshed from Google Patents.
US3287773A
Expired / Lapsed
US
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Method of level control for continuous casting
Assignee: Amsted Industries Inc
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Filing: 1963-12-03
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Granted: 1966-11-29
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Expires: 1983-12-03
Abstract
No abstract record available.
Inventors
- 👤 Jr James Woodburn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:39
CPC Classifications
G; G05; G05D; G05D9/00; G05D9/12; B; B22; B22D; B22D11/00; B22D11/14; B22D11/145; B22D11/16; B22D11/18; B22D11/181; B22D11/183; B22D18/00; B22D18/04; B22D18/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
80 words
THE METHOD OF CONTINUOUS CASTING IN CONJUNCTION WITH A SEALED TANK, A LADLE, A MOLD, AND MEANS COMMUNICASTING BETWEEN THE LADLE AND THE MOLD, COMPRISING THE STEPS, DEVELOPING AIR PRESSURE IN THE TANK, AND THEREBY FORCING MOLTEN METAL FROM THE LADLE INTO THE MOLD, FREEZING THE MOLTEN METAL IN THE MOLD, CONTINUOUSLY WITHDRAWING THE ARTICLE SO FROZEN AND CAST FOR THE MOLD, AND INCREASING THE AIR PRESSURE IN THE TANK IN PROPORTION TO THE RATE OF REMOVING THE CAST ARTICLE.
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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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |