US3269829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for introducing steam and oxygen into a bath of molten steel
Assignee: United States Steel Corp
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Filing: 1963-09-24
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Granted: 1966-08-30
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Expires: 1983-09-24
Abstract
No abstract record available.
Inventors
- 👤 Belkin Jacob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:40
CPC Classifications
F; F27; F27D; F27D3/00; F27D3/16; C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/46; C21C5/4606; F27B; F27B3/00; F27B3/10; F27B3/22
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
138 words
A METHOD OF INTRODUCING STEAM AND OXYGEN INTO A BATH OF MOLTEN METAL WHICH COMPRISES PROVIDING A LANCE HAVING A FIRST TUBE, MEANS CLOSING THE FORWARD END OF SAID FIRST TUBE, A SECOND TUBE HAVING AN INNER DIAMETER GREATER THAN THE OUTER DIAMETER OF SAID FIRST TUBE SURROUNDING SAID FIRST TUBE AND PROVIDING A PASSAGEWAY THEREAROUND, SAID FIRST TUBE HAVING HOLES IN THE WALL THEREOF SPACED APART RADIALLY AND CIRCUMFERENTIALLY THROUGHOUT ITS LENGTH AND MEANS CLOSING THE FORWARD END OF SAID SECOND TUBE, SAID ;AST NAMED MEANS HAVING HOLES THEREIN COMMUNICATING WITH SAID PASSAGEWAY, INTODUCING WATER INTO SAID FIRST TUBE ADJACENT ITS REARWARD END, INTODUCING OXYGEN INTO SAID SECOND TUBE ADJACENT ITS REARWARD END, AND REGULATING THE FLOW OF WATER SO THAT IT WILL ABSORB SUFFICIENT HEAT FROM THE SECOND TUBE TO MAINTAIN IT AT A SAFE TEMPERATURE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |