US3239205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double lances
Assignee: Arcelor Luxembourg SA
•
Filing: 1963-07-12
•
Granted: 1966-03-08
•
Expires: 1983-07-12
Abstract
No abstract record available.
Inventors
- 👤 Metz Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:02
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/46; C21C5/4606
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A DOUBLE LANCE FOR INJECTION OF AT LEAST ONE GAS INTO OR ON TOP OF A METAL MELT, INCLUDING AN INNER TUBULAR MEMBER DEFINING AN INSIDE DUCT FOR PASSAGE OF GAS THERETHROUGH, AN OUTER TUBULAR MEMBER CONCENTRIC WITH SAID INNER MEMBER AND DEFINING THEREWITH AN OUTSIDE DUCT FOR PASSAGE OF GAS, AND MEANS TO ALLOW GAS TO FLOW FROM SAID OUTSIDE DUCT INCLUDING THE PROVISION OF AT LEAST ONE PASSAGE BUT WHEREIN SAID OUTSIDE DUCT IS SUBSTANTIALLY FREE OF CLOGGING BY METAL MELT OR SLAG MATERIALS WHEN GAS IS NOT FLOWING THROUGH SAID PASSAGE, THE OUTSIDE DUCT BEING CLOSED AT ITS LOWER END, AND THE MEANS INCLUDING A CROSS-CHANNELS INTO THE INSIDE DUCT SO THAT THE GAS PASSING THROUGH SAID CROSS-CHANNELS WILL SPREAD THE CENTRAL JET, AND THE CROSS-CHANNELS BEING ARRANGED SO THAT THE AXIS OF THE JETS THEREFROM FORMS AN ACUTE ANGLE
Claim 2
Dependent Claim
143 words
A DOUBLE LANCE FOR INJECTION OF AT LEAST ONE GAS INTO OR ON TOP OF A METAL MELT, INCLUDING AN INNER TUBULAR MEMBER DEFINING AN INSIDE DUCT FOR PASSAGE OF GAS THERETHROUGH, AN OUTER TUBULAR MEMBER CONCENTRIC WITH SAID INNER MEMBER AND DEFINING THEREWITH AN OUTSIDE DUCT FOR PASSAGE OF GAS, AND MEANS TO ALLOW GAS TO FLOW FROM SAID OUTSIDE DUCT INCLUDING THE PROVISION OF AT LEAST ONE PASSAGE BUT WHEREIN SAID OUTSIDE DUCT IS SUBSTANTIALLY FREE OF CLOGGING BY METAL MELT OR SLAG MATERIALS WHEN GAS IS NOT FLOWING THROUGH SAID PASSAGE, THE OUTSIDE DUCT BEING CLOSED AT ITS LOWER END, AND THE MEANS INCLUDING A CROSS-CHANNELS INTO THE INSIDE DUCT SO THAT THE GAS PASSING THROUGH SAID CROSS-CHANNELS WILL SPREAD THE CENTRAL JET, AND THE CROSS-CHANNELS BEING ARRANGED SO THAT THE AXIS OF THE JETS THEREFROM FORMS AN ACUTE ANGLE
References Cited (Backward Citations)
US2407972A
Cited
US2417670A
Cited
US2829960A
Cited
US3045997A
Cited
US3128366A
Cited
US3059860A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |