Patent US2452933A successfully refreshed from Google Patents.
US2855293A
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Method and apparatus for treating molten metal with oxygen
Assignee: Air Liquide SA
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Filing: 1955-03-21
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Granted: 1958-10-07
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Expires: 1975-03-21
Abstract
No abstract record available.
Inventors
- 👤 Savard Guy
- 👤 Lee Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:04
CPC Classifications
B; B22; B22D; B22D1/00; B22D1/002; B22D1/005; C; C21; C21C; C21C5/00; C21C5/28; C21C5/30; C21C5/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A METHOD OF TREATING MOLTEN METAL COMPRISING, DEPOSITING A BODY OF SUCH METAL IN A VESSEL HAVING A SHELL PROVIDED WITH A REFRACTORY LINING, PROJECTING A JET OF CONCENTRATED OXYGEN INTO SAID METAL THROUGH AN INJECTOR MEMBER ENTERING THE VESSEL THROUGH TEH SHELL AND REFRACTORY LINING BELOW THE SURFACE OF THE METAL, THE INJECTION BEING CARRIED ON CONTINUOUSLY FOR A TIME AND AT A TEMPERATURE NORMALLY DESTRUCTIVE TO THE INJECTOR MEMBER, THE OXYGEN BEING INJECTED AT A PRESSURE ABOVE ABOUT 400 POUNDS PER SQUARE INCH THEREBY TO PRODUCE LOCALIZED COOLING EFFECTIVE TO MAINTAIN THE INTEGRITY OF THE INJECTOR MEMBER AT SAID TEMPERATURE AND FOR SAID TIME.
Claim 2
Independent Claim
106 words
A METHOD OF TREATING MOLTEN METAL COMPRISING, DEPOSITING A BODY OF SUCH METAL IN A VESSEL HAVING A SHELL PROVIDED WITH A REFRACTORY LINING, PROJECTING A JET OF CONCENTRATED OXYGEN INTO SAID METAL THROUGH AN INJECTOR MEMBER ENTERING THE VESSEL THROUGH TEH SHELL AND REFRACTORY LINING BELOW THE SURFACE OF THE METAL, THE INJECTION BEING CARRIED ON CONTINUOUSLY FOR A TIME AND AT A TEMPERATURE NORMALLY DESTRUCTIVE TO THE INJECTOR MEMBER, THE OXYGEN BEING INJECTED AT A PRESSURE ABOVE ABOUT 400 POUNDS PER SQUARE INCH THEREBY TO PRODUCE LOCALIZED COOLING EFFECTIVE TO MAINTAIN THE INTEGRITY OF THE INJECTOR MEMBER AT SAID TEMPERATURE AND FOR SAID TIME.
References Cited (Backward Citations)
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US1479997A
Cited
GB216198A
Cited
US1662850A
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US2580614A
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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) | 1961-10-06 | 1962-04-07 | 1962-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-06 | 1966-04-07 | 1966-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-06 | 1970-04-07 | 1970-10-07 | $7700.00 | Window Closed / Lapsed |