US4977950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ejection nozzle for imposing high angular momentum on molten metal stream for producing particle spray
Assignee: Olin Corp
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Filing: 1989-03-13
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Granted: 1990-12-18
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Expires: 2009-03-13
Abstract
Abstract A molten metal spray-depositing apparatus employs an ejection nozzle for receiving a molten metal stream and having a configuration for confining and imparting mechanically an angular momentum thereto which produces stream break-up into a metal particle spray when the stream becomes unconfined upon exiting the nozzle. There are stationary and rotating versions of the ejection nozzle. The stationary ejection nozzle has a flow channel with internal angular elements, such as spiral grooves, which engage the moving molten metal stream to impart angular momentum thereto as it passes through the channel. The rotating ejection nozzle may have internal elements within the flow channel, such as notches or serrations, which engage the moving molten stream and cause it to rotate with the nozzle as it passes through the channel. The two nozzles can also be combined to impart the angular momentum and accomplish melt stream break-up.
Inventors
- 👤 George J. Muench
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:27
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/02; B22F9/06; B22F9/08; B22F9/082; B05; B05B; B05B5/00; B05B7/00; B05B7/16; B05B7/1606; B22D; B22D23/00; B22D23/003; B22F3/00; B22F3/115; B22F2009/0804; B22F2009/0808; B22F2009/088; B22F2009/0892; B22F2998/00; B22F2999/00
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
133 words
In a non-gaseous molten metal spray-depositing apparatus, the combination comprising: (a) means for producing a stream of molten metal; (b) means defining at least one flow channel for receiving the molten metal stream and having a configuration for confining the stream within said flow channel and mechanically imparting an angular momentum thereto as the stream passes through said channel which renders the stream unstable and produces its break-up into a molten metal spray without the use of gas when the stream becomes unconfined upon existing said orifice; (c) means movable along a path and having an area thereon disposed below said molten metal spray for receiving a deposit of said molten metal spray to form a product on said movable means; and (d) means for removing said deposited product from said movable means.
Claim 2
Dependent Claim
133 words
In a non-gaseous molten metal spray-depositing apparatus, the combination comprising: (a) means for producing a stream of molten metal; (b) means defining at least one flow channel for receiving the molten metal stream and having a configuration for confining the stream within said flow channel and mechanically imparting an angular momentum thereto as the stream passes through said channel which renders the stream unstable and produces its break-up into a molten metal spray without the use of gas when the stream becomes unconfined upon existing said orifice; (c) means movable along a path and having an area thereon disposed below said molten metal spray for receiving a deposit of said molten metal spray to form a product on said movable means; and (d) means for removing said deposited product from said movable means.
Claim 3
Dependent Claim
27 words
The apparatus as recited in claim 1, wherein said flow channel defining means is a stationary ejection nozzle having a body with said flow channel extending therethrough.
Claim 4
Dependent Claim
45 words
The apparatus as recited in claim 2, further comprising: a plurality of internal elements defined on said body which are exposed to the stream within said flow channel for engaging the stream and mechanically imparting the angular momentum thereto as it passes through said channel.
Claim 5
Dependent Claim
28 words
The apparatus as recited in claim 3, wherein said angular momentum imparting elements are a plurality of angular grooves defined in said body in communication with said channel.
Claim 6
Dependent Claim
27 words
The apparatus as recited in claim 1, wherein said flow channel defining means is a rotating ejection nozzle having a body with said flow channel extending therethrough.
Claim 7
Dependent Claim
45 words
The apparatus as recited in claim 5, further comprising: a plurality of internal elements defined on said body which are exposed to the stream within said flow channel for engaging the stream and mechanically imparting the angular momentum thereto as it passes through said channel.
Claim 8
Dependent Claim
68 words
The apparatus as recited in claim 6, wherein said angular momentum imparting elements are a plurality of notches defined in said body in communication with said channel for engaging the stream and causing it to rotate with said nozzle as it passes through said channel and thereby imparting angular momentum thereto which renders it unstable and produces its break-up into a molten metal spray upon exiting said orifice.
Claim 9
Dependent Claim
21 words
The apparatus as recited in claim 5, further comprising: means coupled to said rotating ejection nozzle for rotatably driving the same.
Claim 10
Dependent Claim
16 words
The apparatus as recited in claim 8, wherein said driving means is a mechanical drive mechanism.
Claim 11
Dependent Claim
16 words
The apparatus as recited in claim 8, wherein said driving means is a pneumatic drive mechanism.
Claim 12
Dependent Claim
23 words
The apparatus as recited in claim 1, wherein said channel gradually expands in diameter from an entry end to an exit end thereof.
Claim 13
Dependent Claim
99 words
In a molten metal spray-depositing apparatus, the combination comprising: (a) means for producing a stream of molten metal; and (b) means defining at least a pair of upper and lower flow channels being disposed in tandem relation one above the other for receiving the molten metal stream and having configurations for confining the stream within said flow channels and mechanically imparting an angular momentum thereto as the stream passes through said channels which renders the stream unstable and produces its break-up into a molten metal spray when the stream becomes unconfined upon exiting said lower one of said orifices.
Claim 14
Dependent Claim
99 words
In a molten metal spray-depositing apparatus, the combination comprising: (a) means for producing a stream of molten metal; and (b) means defining at least a pair of upper and lower flow channels being disposed in tandem relation one above the other for receiving the molten metal stream and having configurations for confining the stream within said flow channels and mechanically imparting an angular momentum thereto as the stream passes through said channels which renders the stream unstable and produces its break-up into a molten metal spray when the stream becomes unconfined upon exiting said lower one of said orifices.
Claim 15
Dependent Claim
33 words
The apparats as recited in claim 12, wherein said flow channels defining means is a pair of upper and lower ejection nozzles, each having a body with one of said flow channels therethrough.
Claim 16
Dependent Claim
16 words
The apparatus as recited in claim 13, wherein said upper ejection nozzle is a stationary nozzle.
Claim 17
Dependent Claim
50 words
The apparatus as recited in claim 13, further comprising: a plurality of internal elements defined on said body of said upper ejection nozzle which are exposed to the stream within said flow orifice for engaging the stream and mechanically imparting the angular momentum thereto as it passes through said orifice.
Claim 18
Dependent Claim
33 words
The apparatus as recited in claim 15, wherein said angular momentum imparting elements in said upper ejection nozzle are a plurality of angular grooves defined in said body in communication with said orifice.
Claim 19
Dependent Claim
16 words
The apparatus as recited in claim 13, wherein said lower ejection nozzle is a rotating nozzle.
Claim 20
Dependent Claim
50 words
The apparatus as recited in claim 17, further comprising: a plurality of internal elements defined on said body of said lower ejection nozzle which are exposed to the stream within said flow channel for engaging the stream and mechanically imparting the angular momentum thereto as it passes through said orifice.
Claim 21
Dependent Claim
74 words
The apparatus as recited in claim 18, wherein said angular momentum imparting elements in said lower ejection nozzle are a plurality of notches defined in said body in communication with said channel for engaging the stream and causing it to rotate with said nozzle as it passes through said orifice and thereby imparting angular momentum thereto which renders it unstable and produces its break-up into a molten metal spray upon exiting said lower orifice.
Claim 22
Dependent Claim
21 words
The apparatus as recited in claim 17, further comprising: means coupled to said rotating ejection nozzle for rotatably driving the same.
Claim 23
Dependent Claim
16 words
The apparatus as recited in claim 20, wherein said driving means is a mechanical drive mechanism.
Claim 24
Dependent Claim
16 words
The apparatus as recited in claim 20, wherein said driving means is a pneumatic drive mechanism.
Claim 25
Dependent Claim
25 words
The apparatus as recited in claim 12, wherein said upper flow channel gradually expands in diameter from an entry end to an exit end thereof.
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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) | 1993-12-17 | 1994-06-18 | 1994-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-17 | 1998-06-18 | 1998-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-17 | 2002-06-18 | 2002-12-18 | $7700.00 | Window Closed / Lapsed |