US3724388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for electromagnetic suspension and guidance of tracked cars
Assignee: Airbus Defence and Space GmbH
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Filing: 1971-10-01
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Granted: 1973-04-03
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Expires: 1991-10-01
Abstract
Abstract In the apparatus disclosed current is supplied to electromagnets which suspend and / or guide the cars that travel along tracks in an electromagnetic suspension system. The current is alternately supplied along two mains from a single generator. One main exhibits the voltage rated for the electromagnets of the car and the other a voltage which is higher than the rated voltage by an order of magnitude. The higher voltage main supplies high voltage pulses or shock currents for stabilizing cars which deviate slightly from the normal path along the track in response to transverse winds or other transverse forces.
Inventors
- 👤 L Karch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 22:44
CPC Classifications
B; B60; B60L; B60L13/00; B60L13/04; B60L13/06; B60L2200/00; B60L2200/26
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
86 words
An apparatus for a magnetic suspension car, comprising electromagnet means for supporting and/or guiding the car, first main means for carrying electrical current of one voltage, second main means for carrying current at a voltage higher than that of the first main means, and control means for coupling the electromagnet means to said first main means to suspend the car and responsive to external thrusts for momentarily coupling said second main means to the electromagnet means to counter-act the effects of the thrusts on the car.
Claim 2
Independent Claim
86 words
An apparatus for a magnetic suspension car, comprising electromagnet means for supporting and/or guiding the car, first main means for carrying electrical current of one voltage, second main means for carrying current at a voltage higher than that of the first main means, and control means for coupling the electromagnet means to said first main means to suspend the car and responsive to external thrusts for momentarily coupling said second main means to the electromagnet means to counter-act the effects of the thrusts on the car.
Claim 3
Dependent Claim
22 words
An apparatus as in claim 1, further comprising a central main for energizing said first main means and said second main means.
Claim 4
Dependent Claim
19 words
An apparatus as in claim 2, further comprising transformer means connecting said central main to said first main means.
Claim 5
Dependent Claim
30 words
An apparatus as in claim 1, wherein the voltage carried by said second main means is higher than the rated voltage of said electromagnet means by one order of magnitude.
Claim 6
Dependent Claim
27 words
An apparatus as in claim 2, wherein the voltage of said central main is lower than the voltage carried by at least one of said main means.
Claim 7
Dependent Claim
25 words
An apparatus as in claim 1, further comprising generator means located in the car for energizing said first main means and said second main means.
Claim 8
Dependent Claim
15 words
An apparatus as in claim 2, further comprising generator means for energizing said central main.
Claim 9
Dependent Claim
43 words
An apparatus as in claim 1, wherein said electromagnet means includes a plurality of electromagnets which are energized by said main means, and further comprising means for transferring electric power from an electromagnet that has been energized to an electromagnet that requires energization.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |