US3352465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory closure member for bottom pour vessels
Assignee: United States Steel Corp
•
Filing: 1965-05-06
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Granted: 1967-11-14
•
Expires: 1985-05-06
Abstract
No abstract record available.
Inventors
- 👤 James T Shapland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:49
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/10; B; B22; B22D; B22D41/00; B22D41/14; B22D41/22; B22D41/24; C21C7/0081; F; F27; F27D; F27D3/00; F27D3/15; F27D3/1509
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
IN A BOTTOM-POUR VESSEL FOR TEEMING STEEL, HAVING A NOZZLE IN THE BOTTOM THEREOF AND A PANEL SLIDABLE ON SAID BOTTOM TO CONTROL FLOW THROUGH SAID NOZZLE, THE IMPROVEMENT COMPRISING A ROW OF LEVERS OF THE FIRST CLASS PIVOTALLY ATTACHED TO THE BOTTOM OF SAID VESSEL ON EACH SIDE OF SAID PANEL NORMAL TO THE PATH THEREOF, A RAIL ON EACH SIDE OF SAID PANEL PARALLEL TO SAID PATH ENGAGED AND SUPPORTED BY THE INNER ENDS OF THE ADJACENT LEVERS, A BEARING SURFACE ON EACH SIDE OF SAID PANEL ENGAGED AND SUPPORTED BY THE ADJACENT RAIL, AND MEANS URGING THE OUTER END OF EACH LEVER DOWNWARD.
Claim 2
Dependent Claim
106 words
IN A BOTTOM-POUR VESSEL FOR TEEMING STEEL, HAVING A NOZZLE IN THE BOTTOM THEREOF AND A PANEL SLIDABLE ON SAID BOTTOM TO CONTROL FLOW THROUGH SAID NOZZLE, THE IMPROVEMENT COMPRISING A ROW OF LEVERS OF THE FIRST CLASS PIVOTALLY ATTACHED TO THE BOTTOM OF SAID VESSEL ON EACH SIDE OF SAID PANEL NORMAL TO THE PATH THEREOF, A RAIL ON EACH SIDE OF SAID PANEL PARALLEL TO SAID PATH ENGAGED AND SUPPORTED BY THE INNER ENDS OF THE ADJACENT LEVERS, A BEARING SURFACE ON EACH SIDE OF SAID PANEL ENGAGED AND SUPPORTED BY THE ADJACENT RAIL, AND MEANS URGING THE OUTER END OF EACH LEVER DOWNWARD.
References Cited (Backward Citations)
US311902A
Cited
GB189825182A
Cited
US977271A
Cited
US1160775A
Cited
FR1155082A
Cited
US2921351A
Cited
US3259946A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |