Patent US3785633A successfully refreshed from Google Patents.
US3785633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for atomizing molten metal
Assignee: ABB Norden Holding AB
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Filing: 1972-05-08
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Granted: 1974-01-15
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Expires: 1992-05-08
Abstract
Abstract An arrangement for atomizing molten metallic material includes a furnace for tapping into a container and a cooling section. The furnace and container (crucible or ladle) are enclosed in a tank wherein they can be subjected to vacuum. The container is raisable and lowerable with respect to the cooling section, so that a closure valve can be inserted between them when suction is being applied. In the lowered position the container rests on a connecting member which contains nozzles for gas directed against the stream flowing from the container to disintegrate the stream into particles.
Inventors
- 👤 G Karlsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:49
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/02; B22F9/06; B22F9/08; B22F9/082; B22F2009/0888
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
121 words
Means for atomizing a molten metal or metal alloy comprising a furnace for tapping into a container and a cooling section with a connection part, a tank enclosing the furnace and container and provided with at least one vacuum sealing valve, said container being provided with heat-retaining means and a bottom tapping hole, said container being raisable and lowerable with respect to the connection part to the cooling section, the container in its raised position exposing a lower space in which the vacuum sealing valve can be moved in order to close the tank, and in its lowered position engaging the connection part, and nozzles for fluid, at least partly gas, to disintegrate the tapping stream associated with the connection part.
Claim 2
Dependent Claim
121 words
Means for atomizing a molten metal or metal alloy comprising a furnace for tapping into a container and a cooling section with a connection part, a tank enclosing the furnace and container and provided with at least one vacuum sealing valve, said container being provided with heat-retaining means and a bottom tapping hole, said container being raisable and lowerable with respect to the connection part to the cooling section, the container in its raised position exposing a lower space in which the vacuum sealing valve can be moved in order to close the tank, and in its lowered position engaging the connection part, and nozzles for fluid, at least partly gas, to disintegrate the tapping stream associated with the connection part.
Claim 3
Dependent Claim
39 words
Means according to claim 1, having coacting centering members on the wall of the vacuum tank and on the container including conical pins engageable in holes in order to center the casting ladle in the desired position during tapping.
Claim 4
Dependent Claim
33 words
Means according to claim 1, having a cooling dome, the connection part engaging the upper part of the cooling dome and elastically displaceable in relation to the dome by means of elastic members.
Claim 5
Dependent Claim
26 words
Means according to claim 3, having an annular flange at the upper part of the cooling dome carried by the elastic members and carrying said nozzles.
Claim 6
Dependent Claim
32 words
Means according to claim 1, the vacuum tank with furnace and container being movably arranged in relation to the cooling dome after the casting ladle has been raised and the valve sealed.
Claim 7
Dependent Claim
26 words
Means according to claim 1, in which the connection part comprises a sealing ring with a melt opening and gas nozzle and a gas supply part.
References Cited (Backward Citations)
US3692443A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |