Patent US3924538A successfully refreshed from Google Patents.
US3924538A
Expired / Lapsed
US
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Electromagnetic-suspension vehicle system
Assignee: Mannesmann Demag Krauss Maffei GmbH
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Filing: 1974-03-04
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Granted: 1975-12-09
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Expires: 1994-03-04
Abstract
Abstract An electromagnetic-suspension vehicle system comprising a track having a pair of armature rails on opposite sides of a vertical median plane through the path of the vehicle for cooperation with rows of electromagnets carried on opposite sides of the vehicle. At turns, crossings and the like, the track is provided with auxiliary rails longitudinally overlapping the main load carrying rail and effective in cooperation with auxiliary magnets carried by the vehicle to bridge gaps in the main rails.
Inventors
- 👤 Ulrich Breitling
- 👤 Klaus Simon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:45
CPC Classifications
B; B61; B61B; B61B13/00; B61B13/08; B60; B60L; B60L2200/00; B60L2200/26
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
214 words
In a system for the electromagnetic suspension of a vehicle upon a track wherein the vehicle is provided with a pair of electromagnet arrangements on opposite sides thereof and each of the electromagnet arrangements comprises a pair of subrows of electromagnets, the track being formed with armature rails respectively cooperating with the electromagnets of said subrows and having junctions in which there is a transition of the magnetic suspension function between armature rails cooperating with subrows on a side of the vehicle, the improvement wherein one subrow of each pair of subrows forms main suspension electromagnets which may cooperate with a corresponding main armature rail, wherein the other subrow of said pair of subrows forms auxiliary suspension electromagnets which may cooperate with a corresponding auxiliary armature rail, the main armature rails and electromagnet cores of the main suspension electromagnets being provided with a substantially common pole spacing which is different from the common pole spacing of the auxiliary armature rails and the electromagnet cores of the auxiliary suspension electromagnets, such that any magnetic effects between main suspension electromagnets and auxiliary armature rails and between auxiliary suspension electromagnEts and main armature rails, respectively are of insubstantial magnitude, the main armature rails and electromagnets having a greater pole spacing than the auxiliary armature rails and electromagnets.
Claim 2
Dependent Claim
214 words
In a system for the electromagnetic suspension of a vehicle upon a track wherein the vehicle is provided with a pair of electromagnet arrangements on opposite sides thereof and each of the electromagnet arrangements comprises a pair of subrows of electromagnets, the track being formed with armature rails respectively cooperating with the electromagnets of said subrows and having junctions in which there is a transition of the magnetic suspension function between armature rails cooperating with subrows on a side of the vehicle, the improvement wherein one subrow of each pair of subrows forms main suspension electromagnets which may cooperate with a corresponding main armature rail, wherein the other subrow of said pair of subrows forms auxiliary suspension electromagnets which may cooperate with a corresponding auxiliary armature rail, the main armature rails and electromagnet cores of the main suspension electromagnets being provided with a substantially common pole spacing which is different from the common pole spacing of the auxiliary armature rails and the electromagnet cores of the auxiliary suspension electromagnets, such that any magnetic effects between main suspension electromagnets and auxiliary armature rails and between auxiliary suspension electromagnEts and main armature rails, respectively are of insubstantial magnitude, the main armature rails and electromagnets having a greater pole spacing than the auxiliary armature rails and electromagnets.
Claim 3
Dependent Claim
30 words
The improvement defined in claim 1 wherein all of the armature rails are of downwardly open U-section configuration and all of the electromagnets and cores of U-section have openings upwardly.
Claim 4
Dependent Claim
17 words
The improvement defined in claim 2 wherein the main electromagnets are provided outwardly of the auxiliary electromagnets.
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) | 1978-12-08 | 1979-06-09 | 1979-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-08 | 1983-06-09 | 1983-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-08 | 1987-06-09 | 1987-12-09 | $7700.00 | Window Closed / Lapsed |