US3645646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic pump or conveyor trough
Assignee: SMS Elotherm GmbH
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Filing: 1970-02-12
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Granted: 1972-02-29
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Expires: 1990-02-12
Abstract
Abstract An electromagnetic pump or conveyor trough for generating a traveling magnetic field by means of current carried by conductors mounted in slots in the bottom of the trough to move an electrically conductive liquid wherein a first hollow tubular conductor having its bore eccentrically offset toward the bottom of the slot and a second hollow tubular conductor with a height which does not substantially exceed the electromagnetic penetration depth are mounted atop each other in each slot with the second conductor nearest the open end of the slot.
Inventors
- 👤 Axel Von Starck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:08
CPC Classifications
B; B22; B22D; B22D39/00; B22D39/003; B22D39/006; H; H02; H02K; H02K44/00; H02K44/02; H02K44/06
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
131 words
An electromagnetic conveyor for generating a travelling magnetic field so as to move an electrically conductive liquid in a cavity of a body which holds said liquid comprising: a core having a plurality of slots, each having an open end, a plurality of first tubular conductors each mounted in a slot and each having a bore and a plurality of second tubular conductors, each mounted in a slot below said first conductor so that each said first conductor is closer to the open end of the slot than the second conductor in the same slot and each said second conductor having a bore eccentrically offset from the center of said first conductor so as to be closer to the bottom of said slot than to the first conductor in said slot.
Claim 2
Dependent Claim
131 words
An electromagnetic conveyor for generating a travelling magnetic field so as to move an electrically conductive liquid in a cavity of a body which holds said liquid comprising: a core having a plurality of slots, each having an open end, a plurality of first tubular conductors each mounted in a slot and each having a bore and a plurality of second tubular conductors, each mounted in a slot below said first conductor so that each said first conductor is closer to the open end of the slot than the second conductor in the same slot and each said second conductor having a bore eccentrically offset from the center of said first conductor so as to be closer to the bottom of said slot than to the first conductor in said slot.
Claim 3
Dependent Claim
26 words
A conveyor as in claim 1 wherein the height of said first tubular conductors does not substantially exceed the electromagnetic penetration depth of said first conductors.
Claim 4
Dependent Claim
18 words
A conveyor as in claim 1 wherein the bores of said second conductors have a circular cross section.
Claim 5
Dependent Claim
25 words
A conveyor as in claim 1 including means for insulating the first and second conductors in each slot from each other and from said core.
Claim 6
Dependent Claim
15 words
A conveyor as in claim 1 including a trough of refractory material above said core.
Claim 7
Dependent Claim
20 words
A conveyor as in claim 1 whereIn said first tubular conductors each have a bore of substantially rectangular cross section.
Claim 8
Dependent Claim
20 words
A conveyor as in claim 1, including said body and wherein said body is a trough made of refractory material.
Claim 9
Dependent Claim
16 words
A conveyor as in claim 1, including said body and wherein said body is a furnace.
Claim 10
Dependent Claim
13 words
A conveyor as in claim 1 wherein said core is laminated sheet iron.
Claim 11
Dependent Claim
14 words
A conveyor as in claim 9 including a tie bolt holding said laminated core.
Claim 12
Dependent Claim
170 words
An electromagnetic conveyor for generating a travelling magnetic field so as to move an electrically conductive liquid in a cavity of a body which holds said liquid comprising: a laminated sheet iron core having a plurality of slots, each having an open end, a plurality of first tubular conductors each mounted in a slot, each having a bore, and each having a height in said slot which does not substantially exceed the electromagnetic penetration depth of said first conductors, a plurality of tubular conductors, each mounted in a slot below said first conductor so that said first conductor is closer to the open end of the slot than the second conductor in the same slot and each said second conductor having a circular bore eccentrically offset from the center of said first conductor so as to be closer to the bottom of said slot than to the first conductor in said slot means for insulating said first and second conductors in each slot from each other and from said core.
Claim 13
Dependent Claim
170 words
An electromagnetic conveyor for generating a travelling magnetic field so as to move an electrically conductive liquid in a cavity of a body which holds said liquid comprising: a laminated sheet iron core having a plurality of slots, each having an open end, a plurality of first tubular conductors each mounted in a slot, each having a bore, and each having a height in said slot which does not substantially exceed the electromagnetic penetration depth of said first conductors, a plurality of tubular conductors, each mounted in a slot below said first conductor so that said first conductor is closer to the open end of the slot than the second conductor in the same slot and each said second conductor having a circular bore eccentrically offset from the center of said first conductor so as to be closer to the bottom of said slot than to the first conductor in said slot means for insulating said first and second conductors in each slot from each other and from said core.
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) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |