Patent US5089871A successfully refreshed from Google Patents.
US3883045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic conveyor for molten metal with elevated pouring tube
Assignee: SMS Elotherm GmbH
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Filing: 1973-09-14
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Granted: 1975-05-13
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Expires: 1993-09-14
Abstract
Abstract An improved electromagnetic trough for conveying and delivering molten metal or metal alloys, for example, for casting having a melting or holding furnace, an associated electromagnetic trough with a refractory upwardly sloping body, an electromagnetic travelling field inductor extending along its length for conveying the material up the trough, a wall extending across the trough body at the upper end thereof and closing the same, and a refractory tube located adjacent that wall at the upper end of the trough, passing through the floor for delivering molten metal with the upper end of the tube extending above the level of the floor to prevent dribble as the residual melt slowly flows away delayed by irregularities in the brickwork lining.
Inventors
- 👤 Hans Erwin Gerbig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:14
CPC Classifications
B; B22; B22D; B22D39/00; B22D39/003; B22D39/006
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
129 words
In casting equipment for pouring melts, of the type having a furnace associated with an electromagnetic conveying trough proceeding from said furnace vessel, said conveying trough having a refractory body upwardly sloping from said vessel, and an electromagnetic travelling field inductor extending along its length below said refractory body, the floor of the trough rising in the direction of a terminal wall from a point corresponding to the upper end of said conductor, the improvement comprising said terminal wall extending across the width of the trough and closing the effective open cross section of the trough, and a refractory pouring tube which passes through the troUgh bottom in proximity to said wall and of which the upper end projects above the level of the adjacent floor of said trough.
Claim 2
Dependent Claim
129 words
In casting equipment for pouring melts, of the type having a furnace associated with an electromagnetic conveying trough proceeding from said furnace vessel, said conveying trough having a refractory body upwardly sloping from said vessel, and an electromagnetic travelling field inductor extending along its length below said refractory body, the floor of the trough rising in the direction of a terminal wall from a point corresponding to the upper end of said conductor, the improvement comprising said terminal wall extending across the width of the trough and closing the effective open cross section of the trough, and a refractory pouring tube which passes through the troUgh bottom in proximity to said wall and of which the upper end projects above the level of the adjacent floor of said trough.
Claim 3
Dependent Claim
207 words
In casting equipment for pouring melts, of the type having a furnace associated with an electromagnetic conveying trough proceeding from said furnace vessel, said conveying trough having a refractory body upwardly sloping from said vessel, and and electromagnetic travelling field inductor extending along its length, the improvement wherein said refractory body of the trough has an upper end provided with a wall extending across the width of the trough and closing the effective open cross section of the trough, and a refractory pouring tube which passes through the trough bottom in proximity to said wall and of which the upper and projects above the level of the adjacent floor of said trough, said trough having a channel extending through the bottom thereof for the reception of said pouring tube which is connected at the upper end of the channel to the trough bottom, and a sleeve of a refractory material connected to said pouring tube and adhesively bonded to the top of the channel so that its upper end is at least flush with the neighboring part of the trough floor, the wall of the channel below the bottom end of the sleeve being formed by a refractory tube of which the upper end supports the sleeve.
Claim 4
Dependent Claim
207 words
In casting equipment for pouring melts, of the type having a furnace associated with an electromagnetic conveying trough proceeding from said furnace vessel, said conveying trough having a refractory body upwardly sloping from said vessel, and and electromagnetic travelling field inductor extending along its length, the improvement wherein said refractory body of the trough has an upper end provided with a wall extending across the width of the trough and closing the effective open cross section of the trough, and a refractory pouring tube which passes through the trough bottom in proximity to said wall and of which the upper and projects above the level of the adjacent floor of said trough, said trough having a channel extending through the bottom thereof for the reception of said pouring tube which is connected at the upper end of the channel to the trough bottom, and a sleeve of a refractory material connected to said pouring tube and adhesively bonded to the top of the channel so that its upper end is at least flush with the neighboring part of the trough floor, the wall of the channel below the bottom end of the sleeve being formed by a refractory tube of which the upper end supports the sleeve.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |