US3330645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and article for the injection of fluids into hot molten metal
Assignee: Air Liquide SA
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Filing: 1963-07-30
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Granted: 1967-07-11
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Expires: 1983-07-30
Abstract
No abstract record available.
Inventors
- 👤 Moustier Edouard De
- 👤 Guadeloupe Vernou
- 👤 Indies French West
- 👤 Perreau Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:30
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/30; C21C5/34; B; B22; B22D; B22D1/00; B22D1/002; B22D1/005; C21C5/42; C21C5/46; C21C5/48
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
103 words
A METHOD FOR PREVENTING EXCESSIVE LOCALIZED EROSION OF THE REFRACTORY LINING OF A METALLURGICAL VESSEL PROVIDED WITH AT LEAST ONE DUCT FOR INJECTING A FLUID INTO THE MOLTEN METAL CONTENTS OF SAID VESSEL WHEN EROSION TENDS TO OCCUR MORE PARTICULARLY IN AN ANNULAR ZONE AROUND THE OUTLET OF SAID INJECTION DUCT, WHICH METHOD COMPRISES PROVIDING AROUND SAID DUCT A LINING WITH A LARGE NUMBER OF CHANNELS VERY SUBSTANTIALLY NARROWER THAN SAID DUCT, SAID CHANNELS EXTENDING ACROSS SAID LINING INTO SAID ZONE WHICH IS LIABLE TO EXCESSIVE LOCAL EROSION, AND BLOWING A PROTECTIVE FLUID THROUGH SAID CHANNELS INTO THE MOLTEN CONTENTS OF SAID VESSEL.
Claim 2
Independent Claim
103 words
A METHOD FOR PREVENTING EXCESSIVE LOCALIZED EROSION OF THE REFRACTORY LINING OF A METALLURGICAL VESSEL PROVIDED WITH AT LEAST ONE DUCT FOR INJECTING A FLUID INTO THE MOLTEN METAL CONTENTS OF SAID VESSEL WHEN EROSION TENDS TO OCCUR MORE PARTICULARLY IN AN ANNULAR ZONE AROUND THE OUTLET OF SAID INJECTION DUCT, WHICH METHOD COMPRISES PROVIDING AROUND SAID DUCT A LINING WITH A LARGE NUMBER OF CHANNELS VERY SUBSTANTIALLY NARROWER THAN SAID DUCT, SAID CHANNELS EXTENDING ACROSS SAID LINING INTO SAID ZONE WHICH IS LIABLE TO EXCESSIVE LOCAL EROSION, AND BLOWING A PROTECTIVE FLUID THROUGH SAID CHANNELS INTO THE MOLTEN CONTENTS OF SAID VESSEL.
Claim 3
Dependent Claim
60 words
AN INJECTOR DEVICE FOR INJECTING A GAS INTO A CONTAINER OF MOLTEN METAL, COMPRISING AN INJECTION DUCT FOR A FIRST FLUID EXTENDING THROUGH THE WALL OF THE CONTAINER, A POROUS PERMEABLE REFRACTORY SHEATH AROUND SAID DUCT AND MEANS FOR SUPPLYING A SECOND FLUID UNDER PRESSURE TO SAID SHEATH WHEREBY THE SECOND FLUID PERMEATES THROUGH THE SHEATH AND INTO THE CONTAINER.
Claim 4
Dependent Claim
60 words
AN INJECTOR DEVICE FOR INJECTING A GAS INTO A CONTAINER OF MOLTEN METAL, COMPRISING AN INJECTION DUCT FOR A FIRST FLUID EXTENDING THROUGH THE WALL OF THE CONTAINER, A POROUS PERMEABLE REFRACTORY SHEATH AROUND SAID DUCT AND MEANS FOR SUPPLYING A SECOND FLUID UNDER PRESSURE TO SAID SHEATH WHEREBY THE SECOND FLUID PERMEATES THROUGH THE SHEATH AND INTO THE CONTAINER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-10 | 1971-01-09 | 1971-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-10 | 1975-01-09 | 1975-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-10 | 1979-01-09 | 1979-07-11 | $7700.00 | Window Closed / Lapsed |