US3670799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for siphoning molten metal to a continuous casting machine
Assignee: Essex International Inc
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Filing: 1971-01-14
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Granted: 1972-06-20
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Expires: 1991-01-14
Abstract
Abstract A method and system for siphoning molten metal, such as copper or aluminum. A first vessel with molten metal therein and a casting chamber are provided, the casting chamber receiving the molten metal from the first vessel. A continuous tubular member is provided and has a first section and initially has a second section. The first section has an inlet end which is positioned in the first vessel and in the molten metal and has an outlet end which is positioned in the casting chamber. The second section has a discharge end which extends outside the casting chamber.
Inventors
- 👤 Ralph A Vogel
- 👤 Harold S Moss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:18
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/06; B22D11/0637; B22D11/064; Y; Y10; Y10T; Y10T137/00; Y10T137/2713; Y10T137/2842
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
160 words
A method for siphoning of molten metal for transfer from a first vessel to a second vessel, said method comprising the steps of filling said first vessel with said molten metal, providing a tubular member having two sections, the first section having an inlet end, an outlet end, and a melting point greater than the temperature of said molten metal, said second section having a discharge end and having a melting point less than the temperature of said molten metal, inserting said inlet end into said molten metal in said first vessel, positioning said outlet end in said second vessel, and applying a vacuum to said discharge end for drawing said molten metal through said first section and at least partially through said second section, said molten metal melting a portion of said second section which said molten metal contacts, said molten metal thereafter passing by siphon from said first vessel to said second vessel throuGh said first tubular section.
Claim 2
Independent Claim
160 words
A method for siphoning of molten metal for transfer from a first vessel to a second vessel, said method comprising the steps of filling said first vessel with said molten metal, providing a tubular member having two sections, the first section having an inlet end, an outlet end, and a melting point greater than the temperature of said molten metal, said second section having a discharge end and having a melting point less than the temperature of said molten metal, inserting said inlet end into said molten metal in said first vessel, positioning said outlet end in said second vessel, and applying a vacuum to said discharge end for drawing said molten metal through said first section and at least partially through said second section, said molten metal melting a portion of said second section which said molten metal contacts, said molten metal thereafter passing by siphon from said first vessel to said second vessel throuGh said first tubular section.
Claim 3
Dependent Claim
17 words
The method of claim 1 wherein said vacuum is substantially instantaneously applied to start the said siphon.
Claim 4
Dependent Claim
23 words
The method of claim 1 wherein said second vessel comprises a casting chamber wherein said molten metal is cast into a desired shape.
Claim 5
Dependent Claim
40 words
The method of claim 1 wherein said second vessel is a casting chamber wherein said molten metal is cast, said molten metal is copper, said first tubular section is stainless steel, and said second tubular section is soft copper tubing.
Claim 6
Dependent Claim
25 words
The method of claim 1 wherein said molten metal is copper, and the vacuum applied to said discharge end is about 6-12 inches of mercury.
Claim 7
Dependent Claim
25 words
The method of claim 1 wherein said molten metal is aluminum, and the vacuum applied to said discharge end is about 2-4 inches of mercury.
Claim 8
Dependent Claim
27 words
The method of claim 1 wherein said outlet end of said first section is positioned slightly below the level of the inlet end of said first section.
Claim 9
Dependent Claim
45 words
The method of claim 1 wherein said second vessel comprises a peripheral groove in a continuous casting wheel and is enclosed by a metal belt member, said second tubular section is positioned in said groove, and said discharge end extends outwardly from said enclosed groove.
Claim 10
Dependent Claim
32 words
The method of claim 8 wherein said casting wheel is rotated while said second tubular section is positioned therein for carrying said discharge end through the selected portion of said enclosed groove.
Claim 11
Dependent Claim
18 words
The method of claim 1 wherein said molten metal is aluminum and said second tubular section is aluminum.
Claim 12
Independent Claim
159 words
A system for siphoning molten metal, said system comprising a first vessel adapted to hold said molten metal therein, a second vessel to which said molten metal is to be transferred, a tubular member having a first section and a second section, said first section having an inlet end in said first vessel to be disposed in said molten metal and having an outlet end in said second vessel, said second section having a discharge end, said first section formed of a metal having a relatively high melting point, said second section formed of a metal having a relatively low melting point, and vacuum means connected to said discharge end for drawing said molten metal through said first section and at least partially through said second section, whereby said molten will initially melt a portion of said second section and thereafter continuously pass by siphon from said first vessel to said second vessel and through said first tubular section.
Claim 13
Independent Claim
159 words
A system for siphoning molten metal, said system comprising a first vessel adapted to hold said molten metal therein, a second vessel to which said molten metal is to be transferred, a tubular member having a first section and a second section, said first section having an inlet end in said first vessel to be disposed in said molten metal and having an outlet end in said second vessel, said second section having a discharge end, said first section formed of a metal having a relatively high melting point, said second section formed of a metal having a relatively low melting point, and vacuum means connected to said discharge end for drawing said molten metal through said first section and at least partially through said second section, whereby said molten will initially melt a portion of said second section and thereafter continuously pass by siphon from said first vessel to said second vessel and through said first tubular section.
Claim 14
Dependent Claim
21 words
The system of claim 11 wherein said first tubular section is stainless steel, and said second tubular section is soft copper.
Claim 15
Dependent Claim
12 words
The system of claim 11 wherein said second tubular section is aluminum.
Claim 16
Dependent Claim
18 words
The system of claim 11 wherein said second vessel is a casting chamber wherein said metal is solidified.
Claim 17
Dependent Claim
22 words
The system of claim 14 wherein said casting chamber is an enclosed groove defined in the periphery of a continuous casting wheel.
Claim 18
Dependent Claim
21 words
The system of claim 11 wherein said vacuum means is adapted to impart a vacuum of about 6-12 inches of mercury.
Claim 19
Dependent Claim
21 words
The system of claim 11 wherein said vacuum means is adapted to impart a vacuum of about 2-4 inches of mercury.
Claim 20
Dependent Claim
23 words
The system of claim 11 wherein said outlet end is placed below the level of said inlet end of said first tubular section.
Claim 21
Dependent Claim
21 words
The system of claim 11 wherein said outlet end has a reduced internal diameter to provide a choke for said siphoning.
Claim 22
Dependent Claim
12 words
The system of claim 11 wherein said second tubular section is copper.
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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) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |