US3759312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for cooling vacuum cast ingots
Assignee: Jones and Laughlin Steel Inc
•
Filing: 1971-06-24
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Granted: 1973-09-18
•
Expires: 1991-06-24
Abstract
Abstract An ingot of metal continuously cast under vacuum is withdrawn into a cooling chamber maintained at a pressure intermediate casting pressure and atmospheric pressure and cooled therein by sprays of cooling liquid. The seal between the chamber is that effected between the molten metal in the ingot mold and the mold.
Inventors
- 👤 E Mizikar
- 👤 F Rehmus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:26
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/10; B22D11/12; B22D11/124; B22D11/1246
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
93 words
The process of cooling an ingot of metal continuously cast into an open end mold in a casting zone maintained at a pressure below atmospheric pressure comprising continuously transferring the ingot from the casting zone into a cooling zone maintained at a pressure intermediate that of the casting zone and atmospheric pressure by withdrawing it from the discharge end of the mold so that the zone of contact between molten metal and mold seals off the casting zone from the cooling zone, and spraying cooling liquid onto the ingot in the cooling zone.
Claim 2
Dependent Claim
93 words
The process of cooling an ingot of metal continuously cast into an open end mold in a casting zone maintained at a pressure below atmospheric pressure comprising continuously transferring the ingot from the casting zone into a cooling zone maintained at a pressure intermediate that of the casting zone and atmospheric pressure by withdrawing it from the discharge end of the mold so that the zone of contact between molten metal and mold seals off the casting zone from the cooling zone, and spraying cooling liquid onto the ingot in the cooling zone.
Claim 3
Dependent Claim
23 words
The process of claim 1 in which the pressure in the casting zone is not greater than about 10 3 mm of Hg.
Claim 4
Dependent Claim
33 words
The process of claim 1 in which the pressure in the cooling zone is somewhat greater then the pressure at which the cooling liquid exists in the liquid state in said cooling zone.
Claim 5
Dependent Claim
27 words
The process of claim 3 in which the cooling liquid is water and the pressure in the cooling zone is at least about 4.6 mm of Hg.
Claim 6
Dependent Claim
18 words
The process of claim 4 in which the cooling water is sprayed onto the ingot at high pressure.
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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |