US3775156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming composite metal strip
Assignee: Federal Mogul Shoreham Ltd
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Filing: 1971-06-16
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Granted: 1973-11-27
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Expires: 1991-06-16
Abstract
Abstract The specification discloses a method of forming a composite metal strip comprising a backing layer and a layer of two metals which, in liquid form, are immiscible or partially immiscible and having differing densities. The two metals are maintained in molten state in two crucibles each of which has a bottom outlet from which a stream of molten metal issues. The crucible containing the higher density metal is supported within the other crucible so that the stream of higher density metal passes through the lower density metal and issues concentrically with the stream of lower density metal to atomizing gas jets which atomize the streams of metal and direct a spray of the resulting particles onto a backing layer to which the particles adhere.
Inventors
- 👤 A Singer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:40
CPC Classifications
C; C23; C23C; C23C4/00; C23C4/04; C23C4/06; C23C4/08; B; B05; B05B; B05B13/00; B05B13/02; B05B13/0207; B05B7/00; B05B7/16; B05B7/1606; C23C4/12; C23C4/123; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12736; Y10T428/1275; Y10T428/12757
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
63 words
A method as claimed in claim 1 and where the two metals are partially immiscible, wherein a proportion of the metal of higher density is included in the supply of metal of lower density and the temperature of the supply is maintained at a level at which the proportion of metal of higher density is miscible with the supply of lower density metal.
Claim 2
Dependent Claim
58 words
A method as claimed in claim 1 wherein the concentric streams of metals are atomized by a number of jets of gas arranged in an annulus concentric with the stream, said jets being directed inwardly and downwardly of the annulus to direct a spray of particles from said concentric streams onto a backing layer located below the annulus.
Claim 3
Dependent Claim
25 words
A method as claimed in claim 1 wherein the strip is rolled after said spraying to compact the layer of metals sprayed onto the backing.
Claim 4
Independent Claim
134 words
A method of forming a composite metal strip comprising a backing layer and a layer of two metals which are partially immiscible and are of differing densities, said method comprising: a holding a supply of the metal of lower density in molten state with a proportion of the metal of higher density; b maintaining the temperature of said supply at a level at which the proportion of metal of higher density is miscible with the supply of metal of lower density; c allowing a stream of said metals to fall under gravity from said supply; and d directing at least one gas jet onto said stream to form a spray of particles of the metals which is directed onto a backing layer to form a layer of said particles adhering to the backing layer.
Claim 5
Dependent Claim
54 words
A method as claimed in claim 5 wherein the stream of metals is atomized by a number of jets of gas arranged in an annulus concentric with the stream, said jets being directed downwardly of the annulus to direct a spray of particles from said stream onto a backing layer located below the annulus.
Claim 6
Dependent Claim
25 words
A method as claimed in claim 5 wherein the strip is rolled after said spraying to compact the layer of metals sprayed onto the backing.
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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) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |