US5259593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for droplet stream manufacturing
Assignee: University of Southern California
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Filing: 1992-04-16
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Granted: 1993-11-09
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Expires: 2012-04-16
Abstract
Abstract A method of manufacture of a net form product, including directing a stream of liquid from a nozzle onto a collector of the shape of the desired product, applying a disturbance to the stream, preferably an amplitude modulated disturbance, to produce a droplet stream, and with the nozzle and collector in a chamber, controlling the chamber environment. An apparatus for manufacturing a net form product having a source of molten material under pressure, a support for positioning a product collector in a chamber with the collector defining a desired product, a droplet stream generator positioned within the chamber and including a nozzle, a conduit for conducting molten material from the material source to the generator nozzle, a mechanism, typically a modulator, for disturbing the droplet stream, and a drive mechanism for relative movement of the nozzle and support.
Inventors
- 👤 Melissa E. Orme
- 👤 Eric P. Muntz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:32
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/02; B22F9/06; B22F9/08; C; C23; C23C; C23C4/00; C23C4/12; C23C4/123; B22F2998/00
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
120 words
In an apparatus for manufacturing a net form product, the combination of: a source of liquid material under pressure; a chamber; a support for positioning a product collector in said chamber, said collector defining the shape of a desired product; liquid droplet stream generator means positioned within said chamber, said generator means including a nozzle; conduit means for conducting molten material from said material source to said generator nozzle; disturbance means for providing a disturbance to said stream at said nozzle to produce a stream of liquid droplets monodispersed in a single line; and drive means for relative movement of said nozzle and said support for impacting liquid droplets of said stream onto said product collector in a predetermined pattern.
Claim 2
Dependent Claim
120 words
In an apparatus for manufacturing a net form product, the combination of: a source of liquid material under pressure; a chamber; a support for positioning a product collector in said chamber, said collector defining the shape of a desired product; liquid droplet stream generator means positioned within said chamber, said generator means including a nozzle; conduit means for conducting molten material from said material source to said generator nozzle; disturbance means for providing a disturbance to said stream at said nozzle to produce a stream of liquid droplets monodispersed in a single line; and drive means for relative movement of said nozzle and said support for impacting liquid droplets of said stream onto said product collector in a predetermined pattern.
Claim 3
Dependent Claim
21 words
An apparatus as defined in claim 1 wherein said disturbance means includes means for providing a periodic disturbance to said stream.
Claim 4
Dependent Claim
23 words
An apparatus as defined in claim 1 wherein said disturbance means includes modulator means for providing an amplitude modulated disturbance to said stream.
Claim 5
Dependent Claim
23 words
An apparatus as defined in claim 1 including a plurality of said nozzles and a separate conduit means for each of said nozzles.
Claim 6
Dependent Claim
15 words
An apparatus as defined in claim 1 wherein said nozzle is a single stream nozzle.
Claim 7
Dependent Claim
15 words
An apparatus as defined in claim 1 wherein said nozzle is a multiple stream nozzle.
Claim 8
Dependent Claim
34 words
An apparatus as defined in claim 1 including a plurality of said nozzles and a separate conduit means for each of said nozzles, and wherein each of said nozzles is a multiple stream nozzle.
Claim 9
Dependent Claim
16 words
An apparatus as defined in claim 1 including means for controlling the environment in said chamber.
Claim 10
Dependent Claim
39 words
An apparatus as defined in claim 1 including a plurality of sources of liquid material under pressure, a plurality of nozzles, and a separate conduit means for connecting each of said nozzles to a separate one of said sources.
Claim 11
Dependent Claim
32 words
The apparatus as defined in claim 1 wherein said drive means includes means for rotating said produce collector about an axis, and means for moving said nozzle along said axis of rotation.
Claim 12
Dependent Claim
51 words
The apparatus as defined in claim 1 wherein said generator means includes first and second generators, each having a nozzle, and said conduit means includes first and second conduits for said first and second generators, respectively, with said nozzles positioned to provide colliding droplet streams for forming disks of said material.
Claim 13
Dependent Claim
19 words
The apparatus as defined in claim 1 including means for directing a flow of gas into said droplet stream.
Claim 14
Dependent Claim
16 words
An apparatus as defined in claim 8 including means for producing a vacuum in said chamber.
Claim 15
Dependent Claim
18 words
An apparatus as defined in claim 8 including means for providing a reactive gas flow in said chamber.
Claim 16
Dependent Claim
20 words
The apparatus as defined in claim 11 wherein said generators means includes means for varying the velocities of said streams.
Claim 17
Dependent Claim
25 words
The apparatus as defined in claim 12 wherein said means for directly includes means for directing said gas flow counter current to said droplet stream.
Claim 18
Dependent Claim
24 words
The apparatus as defined in claim 12 wherein said means for directing includes means for directing said gas flow along with said droplet stream.
Claim 19
Dependent Claim
117 words
In an apparatus for producing a stream of disk shaped droplets, the combination of: a source of liquid material under pressure; a chamber; liquid droplet stream generator means positioned within said chamber, said generator means including first and second nozzles; conduit means for conducting liquid material from said material source to each of said generator nozzles for producing intersecting streams; modulator means for providing an amplitude modulated disturbance to said streams at said nozzles to produce first and second streams of liquid droplets, with each stream monodispersed in a single line and with droplets of the intersecting streams impacting to form dis-shaped droplets monodispersed in a single line; and means for maintaining a vacuum in said chamber.
Claim 20
Dependent Claim
117 words
In an apparatus for producing a stream of disk shaped droplets, the combination of: a source of liquid material under pressure; a chamber; liquid droplet stream generator means positioned within said chamber, said generator means including first and second nozzles; conduit means for conducting liquid material from said material source to each of said generator nozzles for producing intersecting streams; modulator means for providing an amplitude modulated disturbance to said streams at said nozzles to produce first and second streams of liquid droplets, with each stream monodispersed in a single line and with droplets of the intersecting streams impacting to form dis-shaped droplets monodispersed in a single line; and means for maintaining a vacuum in said chamber.
Claim 21
Dependent Claim
20 words
The apparatus as defined in claim 18 wherein said generators means includes means for varying the velocities of said streams.
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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) | 1996-11-08 | 1997-05-10 | 1997-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-08 | 2001-05-10 | 2001-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-08 | 2005-05-10 | 2005-11-09 | $7700.00 | Window Closed / Lapsed |