Patent US2252986A successfully refreshed from Google Patents.
Patent US4259908A successfully refreshed from Google Patents.
US4259908A
Expired / Lapsed
US
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Electromagnetic suspension vehicle
Assignee: Mannesmann Demag Krauss Maffei GmbH
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Filing: 1979-07-19
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Granted: 1981-04-07
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Expires: 1999-07-19
Abstract
Abstract An electromagnetic suspension vehicle has an electromagnet system for suspending and guiding the vehicle along a track, the electromagnet being elastically suspended so as to be able to move generally parallel to itself transversely of the direction of travel.
Inventors
- 👤 Jochen Feistkorn
- 👤 Edgar Pohlmann
- 👤 Walter Rothmayer
- 👤 Peter Schwarzler
- 👤 Gunter Steinmetz
- 👤 Peter Zander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:58
CPC Classifications
B; B61; B61B; B61B13/00; B61B13/08
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
191 words
An electromagnetic-suspension vehicle system comprising in combination: a track formed with at least one armature rail extending longitudinally along said track in a direction of displacement and having a pair of pole surfaces; a vehicle displaceable along said track, said vehicle being formed with a support extending along said rail; a row of electromagnets on said vehicle for electromagnetically suspending said vehicle from said track, said rail having a pair of pole faces turned toward said electromagnet, said electromagnet having a pair of pole faces turned toward said rail said row, being centered relative to said rail with the pole faces of the electromagnet registering with but spaced from the pole faces of the rail; and spring-and-damper means between said electromagnet and said support for enabling at least limited relative movement of the vehicle and the electromagnet in a plane parallel to a plane of said pole faces, said spring-and-damper means including a pair of leaf springs extending between said electromagnet and said support in a direction perpendicular to said plane, and a restoring spring connected between said support and said electromagnet and effective in a direction parallel to said plane.
Claim 2
Dependent Claim
191 words
An electromagnetic-suspension vehicle system comprising in combination: a track formed with at least one armature rail extending longitudinally along said track in a direction of displacement and having a pair of pole surfaces; a vehicle displaceable along said track, said vehicle being formed with a support extending along said rail; a row of electromagnets on said vehicle for electromagnetically suspending said vehicle from said track, said rail having a pair of pole faces turned toward said electromagnet, said electromagnet having a pair of pole faces turned toward said rail said row, being centered relative to said rail with the pole faces of the electromagnet registering with but spaced from the pole faces of the rail; and spring-and-damper means between said electromagnet and said support for enabling at least limited relative movement of the vehicle and the electromagnet in a plane parallel to a plane of said pole faces, said spring-and-damper means including a pair of leaf springs extending between said electromagnet and said support in a direction perpendicular to said plane, and a restoring spring connected between said support and said electromagnet and effective in a direction parallel to said plane.
Claim 3
Dependent Claim
21 words
The system defined in claim 1 wherein the pole faces of said electromagnets lie in a plane perpendicular to the vehicle.
Claim 4
Dependent Claim
23 words
The system defined in claim 2, further comprising means for adjustably shifting said electromagnet substantially perpendicular to said plane relative to said vehicle.
Claim 5
Dependent Claim
18 words
The system defined in claim 1 wherein the pole faces of said electromagnet are inclined to the vehicle.
Claim 6
Dependent Claim
30 words
The system defined in claim 1 wherein said spring-and-damper means includes a dashpot damper connected between said electromagnet and said support and effective in a direction parallel to said plane.
Claim 7
Dependent Claim
22 words
The system defined in claim 1 wherein the spring-and-damper means includes a plurality of elastomeric members mounting said electromagnet on said support.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-06 | 1984-10-06 | 1985-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-06 | 1988-10-06 | 1989-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-06 | 1992-10-06 | 1993-04-07 | $7700.00 | Window Closed / Lapsed |