Patent US3253307A successfully refreshed from Google Patents.
US3253307A
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Method and apparatus for regulating molten metal teeming rates
Assignee: United States Steel Corp
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Filing: 1964-03-19
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Granted: 1966-05-31
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Expires: 1984-03-19
Abstract
No abstract record available.
Inventors
- 👤 David K Griffiths
- 👤 Michael A Orehoski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:12
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/16; B22D11/18; B22D37/00; B22D41/00; B22D41/08; B22D41/50; B22D41/58
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
48 words
A METHOD OF REGULATING THE DISCHARGE OF LIQUID THROUGH A CYLINDRICAL NOZZLE ORIFICE IN THE BOTTOM OF A CONTAINER WHCIH COMPRISES INJECTING GAS UNDER PRESSURE INTO SAID ORIFICE AT A POINT BELOW ITS UPPER END TO RESTRICT THE RATE AT WHICH THE LIQUID WILL FLOW THROUGH SAID ORIFICE.
Claim 2
Independent Claim
48 words
A METHOD OF REGULATING THE DISCHARGE OF LIQUID THROUGH A CYLINDRICAL NOZZLE ORIFICE IN THE BOTTOM OF A CONTAINER WHCIH COMPRISES INJECTING GAS UNDER PRESSURE INTO SAID ORIFICE AT A POINT BELOW ITS UPPER END TO RESTRICT THE RATE AT WHICH THE LIQUID WILL FLOW THROUGH SAID ORIFICE.
Claim 3
Dependent Claim
112 words
APPARATUS FOR REGULATING THE DISCHARGE OF MOLTEN METAL THROUGH A TEEMING ORIFICE IN THE BOTTOM OF A REFRACTORY-LINED LADLE COMPRISING THE COMBINATION WITH A REFRACTORY NOZZLE DEFINING SAID ORIFICE, OF MEANS PROVIDING A GAS PASSAGE OPENING THROUGH SIDE OF SAID NOZZLE FOR THE DELIVERY OF GAS INTO SAID ORIFICE AT A POINT BELOW THE UPPER END THEREOF, AND MEANS FOR CONTROLLING THE RATE AT WHICH METAL FLOWS THROUGH SAID DISCHARGE ORIFICE COMPRISING MEANS FOR SUPPLYING GAS UNDER PRESSURE TO SAID GAS PASSAGE MEANS, AND A THROTTLE VALVE IN SAID SUPPLY MEANS FOR REGULATING THE GAS DELIVERED INTO SAID ORIVICE TO THEREBY REGULATE THE RATE AT WHICH MOLTEN METAL TEEMS THROUGH SAID ORIFICE.
Claim 4
Dependent Claim
112 words
APPARATUS FOR REGULATING THE DISCHARGE OF MOLTEN METAL THROUGH A TEEMING ORIFICE IN THE BOTTOM OF A REFRACTORY-LINED LADLE COMPRISING THE COMBINATION WITH A REFRACTORY NOZZLE DEFINING SAID ORIFICE, OF MEANS PROVIDING A GAS PASSAGE OPENING THROUGH SIDE OF SAID NOZZLE FOR THE DELIVERY OF GAS INTO SAID ORIFICE AT A POINT BELOW THE UPPER END THEREOF, AND MEANS FOR CONTROLLING THE RATE AT WHICH METAL FLOWS THROUGH SAID DISCHARGE ORIFICE COMPRISING MEANS FOR SUPPLYING GAS UNDER PRESSURE TO SAID GAS PASSAGE MEANS, AND A THROTTLE VALVE IN SAID SUPPLY MEANS FOR REGULATING THE GAS DELIVERED INTO SAID ORIVICE TO THEREBY REGULATE THE RATE AT WHICH MOLTEN METAL TEEMS THROUGH SAID ORIFICE.
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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) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |