US4650130A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rapidly solidified powder production system
Assignee: Honeywell International Inc
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Filing: 1982-01-04
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Granted: 1987-03-17
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Expires: 2002-01-04
Abstract
Abstract A system is described for the production of rapidly solidified powder. The system contains elements for casting rapidly solidified ribbon, an in-line knife mill or a hammer mill for fracturing the rapidly solidified ribbon into shard, and either an in-line fluid energy mill, or an in-line centrifugal mill for reducing the shard to powder. The system can effectively reduce ribbon to powder in an in-line operation, and produce a powder with a particle size of -35 mesh.
Inventors
- 👤 Robert E. Hathaway
- 👤 Edward M. Norin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:55
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/02; B22F9/04; B22F9/002; B22F9/008; B22F2009/045; B22F2009/046; B22F2998/00; B22F2998/10; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4998; Y10T29/49988; Y10T29/49989
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
116 words
A system for in-line production of rapidly solidified metal powder comprising: a crucible for containing a bath of molten metal; means for heating said bath of molten metal; a nozzle attached to said crucible through which said molten metal passes forming a stream of molten metal; a moving chill surface, in close proximity to said nozzle, for solidifying said stream of molten metal forming a continuous ribbon; means for forming shard, said means being operatively associated with said nozzle for receiving said ribbon and fracturing said ribbon to form shard; and means for forming powder, said means being operatively associated with said shard-forming means for receiving said shard and reducing said shard to produce a powder.
Claim 2
Independent Claim
116 words
A system for in-line production of rapidly solidified metal powder comprising: a crucible for containing a bath of molten metal; means for heating said bath of molten metal; a nozzle attached to said crucible through which said molten metal passes forming a stream of molten metal; a moving chill surface, in close proximity to said nozzle, for solidifying said stream of molten metal forming a continuous ribbon; means for forming shard, said means being operatively associated with said nozzle for receiving said ribbon and fracturing said ribbon to form shard; and means for forming powder, said means being operatively associated with said shard-forming means for receiving said shard and reducing said shard to produce a powder.
Claim 3
Dependent Claim
15 words
The system of claim 1 wherein said means for forming shard is a hammer mill.
Claim 4
Dependent Claim
16 words
The system of claim 2 wherein said means for forming powder is a fluid energy mill.
Claim 5
Dependent Claim
15 words
The system of claim 2 wherein said means for forming powder is a vortex mill.
Claim 6
Dependent Claim
15 words
The system of claim 1 wherein said means for forming shard is a knife mill.
Claim 7
Dependent Claim
16 words
The system of claim 5 wherein said means for forming powder is a fluid energy mill.
Claim 8
Dependent Claim
15 words
The system of claim 5 wherein said means for forming powder is an impact mill.
Claim 9
Dependent Claim
32 words
The system of claim 3 or 7 further comprising: means, operatively associated with said shard-forming means, for heat treating said shard before said shard is receiving by said means for forming powder.
Claim 10
Dependent Claim
13 words
The system of claim 7 wherein said nozzle is a planar flow nozzle.
Claim 11
Dependent Claim
18 words
The system of claim 9 further comprising means, operatively associated with said shard-forming means, for heating said shard.
Claim 12
Dependent Claim
25 words
The system of claim 3 or 7 further comprising: means, operatively associated with said crucible, for continuously feeding pellets of said metal to said crucible.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-16 | 1990-09-15 | 1991-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-16 | 1994-09-15 | 1995-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-16 | 1998-09-15 | 1999-03-17 | $7700.00 | Window Closed / Lapsed |