US4487401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for heating, mixing and/or transferring metals in the liquid state
Assignee: Rio Tinto France SAS
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Filing: 1982-11-17
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Granted: 1984-12-11
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Expires: 2002-11-17
Abstract
Abstract The device includes a chamber for holding a metal in the liquid state having a lower section that communicates with three channels which converge to form a single passage wherein two of the channels include inductor cores around which the channel forms an annular zone to contain the metal. In the presence of alternating currents of variable voltage and phase, the inductors can be energized separately or simultaneously to perform the heating, mixing and transferring operations within the channels.
Inventors
- 👤 Charles Vives
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:55
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/34; H02; H02K; H02K44/00; H02K44/02; H02K44/06; H05B6/22; H05B2213/00; H05B2213/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
144 words
A device for heating, mixing and/or transferring metals in the liquid state comprising a chamber for holding the liquid, the lower section of said chamber communicating with a plurality of channels that converge at one point and which are formed to circulate the liquid, one of the channels being extendable into the interior of the chamber by a pipe that leads out of the chamber wherein each of the non-extendable channels defines a cavity along its axis, an inductor core being in communication with the interior of said cavity, said inductor core being energized by a low frequency alternating current, each non-extendable channel forming an annular zone about said cavity, the non-extendable channels being formed relative to the cavities whereby the axis of each channel is located in a vertical plane and forms relative to horizontal an upwardly directed angle of less than 60°.
Claim 2
Independent Claim
144 words
A device for heating, mixing and/or transferring metals in the liquid state comprising a chamber for holding the liquid, the lower section of said chamber communicating with a plurality of channels that converge at one point and which are formed to circulate the liquid, one of the channels being extendable into the interior of the chamber by a pipe that leads out of the chamber wherein each of the non-extendable channels defines a cavity along its axis, an inductor core being in communication with the interior of said cavity, said inductor core being energized by a low frequency alternating current, each non-extendable channel forming an annular zone about said cavity, the non-extendable channels being formed relative to the cavities whereby the axis of each channel is located in a vertical plane and forms relative to horizontal an upwardly directed angle of less than 60°.
Claim 3
Dependent Claim
32 words
The device according to claim 1 wherein the heating and transferring of liquid toward the extendable channel are performed by energizing the inductors with alternating currents of the same voltage in phase.
Claim 4
Dependent Claim
33 words
The device according to claim 1 wherein the heating and mixing of liquid are performed by energizing the inductors with alternating currents of the same voltage, said alternating currents being phase-shifted by 180°.
Claim 5
Dependent Claim
32 words
The device according to claim 2 wherein the rate of transfer of the liquid toward the extendable channel is controlled by the degree of phase-shifting of the currents which energize the inductors.
Claim 6
Dependent Claim
27 words
The device according to claim 1 wherein the heating and transferring from one non-extendable channel to another non-extendable channel are performed by energizing one of the inductors.
Claim 7
Independent Claim
144 words
A device for heating, mixing and/or transferring metals in the liquid state comprising a chamber for holding the liquid, the lower section of said chamber communicating with three channels that converge at one point and which are formed to circulate the liquid, one of the channels being extendable into the interior of the chamber by a pipe that leads out of the chamber wherein each of the two non-extendable channels defines a cavity along its axis, an inductor core being in communication with the interior of said cavity, said inductor core being energized by a low frequency alternating current, each non-extendable channel forming an annular zone about said cavity, the non-extendable channels being formed relative to the cavities whereby the axes of the channels are located in the same vertical plane and form relative to horizontal an upwardly directed angle of less than 60°.
Claim 8
Independent Claim
144 words
A device for heating, mixing and/or transferring metals in the liquid state comprising a chamber for holding the liquid, the lower section of said chamber communicating with three channels that converge at one point and which are formed to circulate the liquid, one of the channels being extendable into the interior of the chamber by a pipe that leads out of the chamber wherein each of the two non-extendable channels defines a cavity along its axis, an inductor core being in communication with the interior of said cavity, said inductor core being energized by a low frequency alternating current, each non-extendable channel forming an annular zone about said cavity, the non-extendable channels being formed relative to the cavities whereby the axes of the channels are located in the same vertical plane and form relative to horizontal an upwardly directed angle of less than 60°.
Claim 9
Dependent Claim
32 words
The device according to claim 6 wherein the heating and transferring of liquid toward the extendable channel are performed by energizing the inductors with alternating currents of the same voltage in phase.
Claim 10
Dependent Claim
33 words
The device according to claim 6 wherein the heating and mixing of liquid are performed by energizing the inductors with alternating currents of the same voltage, said alternating currents being phase-shifted by 180°.
Claim 11
Dependent Claim
32 words
The device according to claim 7 wherein the rate of transfer of the liquid toward the extendable channel is controlled by the degree of phase-shifting of the currents which energize the inductors.
Claim 12
Dependent Claim
28 words
The device according to claim 6 wherein the heating and transferring from one non-extendable channel to the other non-extendable channel are performed by energizing one of the inductors.
References Cited (Backward Citations)
SU353121A1
Cited
FR1600320A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-12-11 | 1988-06-11 | 1988-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-11 | 1992-06-11 | 1992-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-11 | 1996-06-11 | 1996-12-11 | $7700.00 | Window Closed / Lapsed |