US3271827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stopper rod actuating device
Assignee: United States Steel Corp
•
Filing: 1964-04-22
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Granted: 1966-09-13
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Expires: 1984-04-22
Abstract
No abstract record available.
Inventors
- 👤 Richard S Crowell
- 👤 Thomas A Cuscino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:02
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/10; B22D41/00; B22D41/14; B22D41/16; B22D41/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
93 words
FOR A BOTTOM POUR LADLE CONTAINING MOLTEN METAL HAVING AT LEAST ONE DISCHARGE NOZZLE IN THE BOTTOM, A HOLLOW SUPPORTIONG BEAM EXTENDING OVER THE LADDLE BETWEEN TWO PREDETERMINED POINTS ON THE RIM THEREOF AND SECURED TO SAID RIM, STOPPER ROD MEANS COMPRISING ONE STOPPER ROD ASSEMBLY FOR EACH DISCHARGE NOZZLE DEPENDING FROM SAID SUPPORTING BEAM, HYDRAULIC MEANS COMPRISING A FLUID ACTUATED CYLINDER OPERATIVELY CONNECTED TO EACH STOPPER ROD ASSEMBLY AND SUPPORTED BY SAID SUPPORTING BEAM, AND MEANS FOR CIRCULATING AIR THROUGH SAID HOLLOW SUPPORTING BEAM TO COOL SAID HYDRAULIC MEANS AND RELATED MECHANISM.
References Cited (Backward Citations)
US2336518A
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US2113894A
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US2753605A
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US3028642A
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US3063109A
Cited
US3091824A
Cited
US3162909A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |