US3913045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear moving field inductor for electromagnetic pumps, conveyor troughs or agitator reels for liquid metals
Assignee: SMS Elotherm GmbH
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Filing: 1974-08-05
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Granted: 1975-10-14
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Expires: 1994-08-05
Abstract
Abstract A linear moving field inductor for an electromagnetic conveyor trough or the like in which each of the teeth of the lamina bundle - defining the grooves in which a multiphase induction coil is arranged - is bounded by two grooves and encloses a single winding having a height less than the depth of the grooves. In each groove a heat elimination device, such as copper blocks, is inserted and connected at least on the side facing the groove opening with a groove cooling unit comprising one or more cooling pipes connected thermally with a groove closing plate closing off the groove opening.
Inventors
- 👤 Starck Axel Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:03
CPC Classifications
H; H02; H02K; H02K44/00; H02K44/02; H02K44/06; B; B22; B22D; B22D39/00; B22D39/003; B22D39/006
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
129 words
In linear moving field inductor for apparatus for moving molten metal having a laminated grooved inductor lamina bundle of magnetic material, in the grooves of which a multiphase induction coil is arranged, the improvement wherein each of the teeth of the lamina bundle is bounded on both sides by two grooves and enclosed in a single winding, the height of which is less than the depth of the grooves; and in each groove between the side surfaces of two adjacent single windings a heat-elimination device is inserted and connected thermally with the windings and connected at least on its side facing the groove opening with a groove cooling unit with one or more cooling pipes that are connected thermally with a groove-closing plate that closes off the groove opening.
Claim 2
Dependent Claim
129 words
In linear moving field inductor for apparatus for moving molten metal having a laminated grooved inductor lamina bundle of magnetic material, in the grooves of which a multiphase induction coil is arranged, the improvement wherein each of the teeth of the lamina bundle is bounded on both sides by two grooves and enclosed in a single winding, the height of which is less than the depth of the grooves; and in each groove between the side surfaces of two adjacent single windings a heat-elimination device is inserted and connected thermally with the windings and connected at least on its side facing the groove opening with a groove cooling unit with one or more cooling pipes that are connected thermally with a groove-closing plate that closes off the groove opening.
Claim 3
Dependent Claim
19 words
In a moving field inductor as in claim 1, the further improvement wherein the single windings are wire coilings.
Claim 4
Dependent Claim
26 words
In a moving field inductor as in claim 1, the further improvement wherein the single windings are cast in insulating material to form a frame-shaped block.
Claim 5
Dependent Claim
20 words
In a moving field inductor as in claim 1, the further improvement wherein the heat elimination devices are copper blocks.
Claim 6
Dependent Claim
31 words
In a moving field inductor as in claim 1, the further improvement wherein the groove-closing plates extend over the width of the lamina bundle and are braced against this lamina bundle.
Claim 7
Dependent Claim
50 words
In a moving field inductor as in claim 1, the further improvement wherein in the lamina bundle, several heat eliminating lamina are arranged between the lamina of magnetic material, and these heat eliminating lamina are connected on the side of the lamina bundle facing the grooved side to heat sinks.
Claim 8
Dependent Claim
24 words
In a moving field inductor as in claim 6, the further improvement wherein the heat sinks are copper pipes through which a coolant passes.
Claim 9
Dependent Claim
38 words
In a moving field inductor as in claim 1, the further improvement wherein the cooling pipes of the cooling units of several grooves are connected to each other to form meander-shaped cooling coils by means of pipe pieces.
References Cited (Backward Citations)
US3645646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-13 | 1979-04-14 | 1979-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-13 | 1983-04-14 | 1983-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-13 | 1987-04-14 | 1987-10-14 | $7700.00 | Window Closed / Lapsed |