US4374789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metallic particle generation device
Assignee: TDY Industries LLC
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Filing: 1981-09-08
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Granted: 1983-02-22
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Expires: 2001-09-08
Abstract
Abstract A device for producing metallic particles utilizes the Coanda Effect to draw one stream of gas toward another stream of gas flowing over a foil. Molten metal is introduced between the two gas streams, and the resulting interaction breaks up the molten metal flow into particles of appropriate size, shape, composition and the like.
Inventors
- 👤 Earl N. Stuck
- 👤 Keith D. Pigney
- 👤 Howard Gifford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:05
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/02; B22F9/06; B22F9/08; B22F9/082; B22F2009/088
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
146 words
A process for producing metallic particles comprising steps of: defining a Coanda surface; flowing a first fluid along the Coanda surface; locating a second fluid adjacent the Coanda surface, said first and second fluids being selected and located with respect to each other so that the flow of said first fluid influences said second fluid to flow in a direction which intersects said first fluid; flowing a molten metal adjacent the Coanda surface; locating the molten metal flow so that said molten metal flow is located between said first and second fluids so that said molten metal postpones but does not prevent the intersection of said first and second fluids; and flowing said fluids and said molten metal to an intersection position whereat said first and second fluids intersect, said fluids and said molten metal intermixing thereby breaking up said molten metal flow into metallic particles.
Claim 2
Dependent Claim
146 words
A process for producing metallic particles comprising steps of: defining a Coanda surface; flowing a first fluid along the Coanda surface; locating a second fluid adjacent the Coanda surface, said first and second fluids being selected and located with respect to each other so that the flow of said first fluid influences said second fluid to flow in a direction which intersects said first fluid; flowing a molten metal adjacent the Coanda surface; locating the molten metal flow so that said molten metal flow is located between said first and second fluids so that said molten metal postpones but does not prevent the intersection of said first and second fluids; and flowing said fluids and said molten metal to an intersection position whereat said first and second fluids intersect, said fluids and said molten metal intermixing thereby breaking up said molten metal flow into metallic particles.
Claim 3
Dependent Claim
14 words
The process defined in claim 1 wherein said first and second fluids are gaseous.
Claim 4
Dependent Claim
20 words
The process defined in claim 1 wherein said molten metal flow is defined to establish a sheet of molten metal.
Claim 5
Dependent Claim
15 words
The process defined in claim 1 further including a step of collecting the metallic particles.
Claim 6
Dependent Claim
18 words
The process defined in claim 4 further including a step of surrounding the Coanda surface in a container.
Claim 7
Dependent Claim
42 words
The process defined in claim 1 wherein said step locating the molten metal flow includes locating such molten metal flow to intersect the flows of said first and second fluids at a location whereat said first fluid initially influences said second fluid.
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) | 1986-02-21 | 1986-08-23 | 1987-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-21 | 1990-08-23 | 1991-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-21 | 1994-08-23 | 1995-02-22 | $7700.00 | Window Closed / Lapsed |