Patent US3735799A successfully refreshed from Google Patents.
US3735799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for continuous casting of metal
Assignee: ABB Norden Holding AB
•
Filing: 1971-03-01
•
Granted: 1973-05-29
•
Expires: 1991-03-01
Abstract
Abstract An electromagnetic field is produced in a flow of molten metal by a coil surrounding the flow in order to establish forces in the flow. A coolant is applied to the solidifying and solidified surface of the ingot produced from the flow. A thin non-magnetic screen in positioned between the coil and the flow and insulating material is positioned between the screen and the coil. Coolant is also applied to the screen.
Inventors
- 👤 K K Karlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:16
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/01; B22D11/015
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
105 words
Means for continuous casting an ingot, comprising at least one coil to produce an electromagnetic field in a flow of molten metal in order to generate forces directed towards said flow, said coil adapted to axially extend a substantial distance along the solidified ingot from the nonsolidified portion of the ingot, an enclosed protective screen of non-magnetic material arranged inwardly along the entire length of said coil, means to conduct a coolant towards the nonsolidified portion of said ingot, said screen being arranged in relation to the coolant conductor in such a way that, during the casting, it is sprinkled with coolant from the inside.
Claim 2
Dependent Claim
105 words
Means for continuous casting an ingot, comprising at least one coil to produce an electromagnetic field in a flow of molten metal in order to generate forces directed towards said flow, said coil adapted to axially extend a substantial distance along the solidified ingot from the nonsolidified portion of the ingot, an enclosed protective screen of non-magnetic material arranged inwardly along the entire length of said coil, means to conduct a coolant towards the nonsolidified portion of said ingot, said screen being arranged in relation to the coolant conductor in such a way that, during the casting, it is sprinkled with coolant from the inside.
Claim 3
Dependent Claim
18 words
Means according to claim 1, including insulating means for the winding placed between the screen and the coil.
References Cited (Backward Citations)
US3467166A
Cited
US3605865A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |