US3640762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for vaporizing molten metal
Assignee: Republic Steel Corp
•
Filing: 1970-05-26
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Granted: 1972-02-08
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Expires: 1990-05-26
Abstract
Abstract Apparatus and method for vaporizing molten metal without entrainment of liquid droplets includes charging a pool of molten metal into a chamber in which there is a block having a plurality of passages. A finger is disposed in each passage of the block, a space being left between the inner surface of the passage and the outer surface of the finger to create a shell of fluid metal within the passage. Heating the shells of fluid metal generates metal vapor. The metal vapor is passed through a tortuous path and then directed by a nozzle toward a moving substrate to be coated.
Inventors
- 👤 William A Reed
- 👤 Frank J Cole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:41
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/22; C23C14/24; C23C14/243
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
19 words
A method according to claim 1, further comprising the step of continuously charging said chamber with said molten metal.
Claim 2
Dependent Claim
23 words
A method according to claim 1, wherein said chamber is maintained under vacuum to provide for the production of metal vapor under vacuum.
Claim 3
Dependent Claim
21 words
A method according to claim 1, wherein said chamber, said block and said fingers are not attacked by said molten metal.
Claim 4
Dependent Claim
24 words
A method according to claim 1, wherein said chamber, said block and said fingers are fabricated from graphite when said molten metal is zinc.
Claim 5
Dependent Claim
21 words
A method according to claim 1, further comprising the step of directing the metal vapor from said chamber by nozzle means.
Claim 6
Dependent Claim
26 words
A method according to claim 6, further comprising the step of passing said metal vapor through a tortuous path between said chamber and said nozzle means.
Claim 7
Dependent Claim
15 words
A method according to claim 6, wherein said metal vapor passes horizontally from said chamber.
Claim 8
Dependent Claim
24 words
A method according to claim 1, further comprising the step of directing said generated metal vapor against a continuously moving substrate to be coated.
Claim 9
Dependent Claim
22 words
A method according to claim 1, wherein a thin layer of said molten metal is maintained at the bottom of said chamber.
References Cited (Backward Citations)
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US2665225A
Cited
US3330647A
Cited
US3400241A
Cited
US3405251A
Cited
US3458347A
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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) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |