Patent US3854412A successfully refreshed from Google Patents.
US3854412A
Expired / Lapsed
US
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Switch for use in a magnetic suspension railroad
Assignee: Siemens AG
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Filing: 1973-08-15
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Granted: 1974-12-17
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Expires: 1993-08-15
Abstract
Abstract An improved switch for use in a magnetic suspension railroad of the type wherein primary conductor loops in a vehicle react with secondary conductor loops or conducting plates installed in the roadbed to provide support and/or guidance of the vehicle, in which, at the area of the switch, the secondary conductor loops or plates are provided only on the two outer sides of the switch and the primary current carrying loops in the vehicle are mounted so that they can be moved out of the action range of the secondary conductor loops or plates in order to select the direction of travel when the switch is encountered. In an alternate embodiment the secondary plates are adapted for movement out of the action range of the primary loops.
Inventors
- 👤 H Dull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:26
CPC Classifications
B; B61; B61B; B61B13/00; B61B13/08; E; E01; E01B; E01B25/00; E01B25/30; E01B25/34
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
150 words
In a magnetic suspension railroad in which a vehicle is magnetically suspended and guided by the reaction of primary current carrying conductor loops in the vehicle with secondary conductor means installed on the roadbed, an improved switching arrangement for switching the vehicle between a straight track and a curved track comprising: a. first secondary conductor means following a direction parallel to the direction of the straight portion of track; b. second secondary conductor means following the path of the curved section of the track; c. means comprising primary conductor loops installed in the vehicle arranged to react with said first and second secondary conductor means; and d. means to selcetively provide for relative movement of said primary conductor loops with respect to said first and second secondary conductor means so that in the switch area only one secondary conductor plate is in the action range of said primary conductor loops.
Claim 2
Dependent Claim
150 words
In a magnetic suspension railroad in which a vehicle is magnetically suspended and guided by the reaction of primary current carrying conductor loops in the vehicle with secondary conductor means installed on the roadbed, an improved switching arrangement for switching the vehicle between a straight track and a curved track comprising: a. first secondary conductor means following a direction parallel to the direction of the straight portion of track; b. second secondary conductor means following the path of the curved section of the track; c. means comprising primary conductor loops installed in the vehicle arranged to react with said first and second secondary conductor means; and d. means to selcetively provide for relative movement of said primary conductor loops with respect to said first and second secondary conductor means so that in the switch area only one secondary conductor plate is in the action range of said primary conductor loops.
Claim 3
Dependent Claim
93 words
The invention according to claim 1 wherein primary conductor loops for guidance are installed on each side of said vehicle, said first secondary conductor means comprises a conductor plate arranged along the outside of the straight section of track, said second secondary conductor plate comprises a conductor plate arranged along the inside of said curved section of track and said means to provide relative motion comprises means to selectively move the primary conductor loops on one or the other sides of said vehicle out of the range of its associated secondary conductor plate.
Claim 4
Dependent Claim
25 words
The invention according to claim 2 wherein said means to move comprise means to swing said primary conductor loops away from their associated secondary plates.
Claim 5
Dependent Claim
22 words
The invention according to claim 3 wherein at least in the area of the switch the secondary conductor plates are arc shaped.
Claim 6
Dependent Claim
72 words
The invention according to claim 4 wherein a single primary conductor loop is provided on each side for both guidance and suspension and wherein there are installed in addition to said secondary conductor means a guidance conductor plate and a support conductor plate and wherein in the operating position said primary conductor loop additionally co-operates with said guidance conductor plate and when in the retracted position co-operates with said support conductor plate.
Claim 7
Dependent Claim
44 words
The invention according to claim 2 wherein said primary conductor loops are mounted for vertical up and down motion and said means to move said primary condUctor loops comprises means for retracting said loops out of the range of their associated secondary conductor plate.
Claim 8
Dependent Claim
37 words
The invention according to claim 1 wherein said means for obtaining relative motion comprise means to move said secondary conductor means in a vertical direction in and out of the range of their associated primary conductor loops.
Claim 9
Dependent Claim
72 words
The invention according to claim 7 wherein said first secondary conductor plate is arranged on the outside of said straight section of track and said second secondary conductor means on the inside of said curved section of track, each of said first and second secondary conductor plates being mounted for vertical motion and said means to provide motion comprises means to selectively raise and lower said first and second secondary conductor plates.
Claim 10
Dependent Claim
79 words
The invention according to claim 8 wherein said first secondary conductor means comprises a conductor plate arranged in the center of said straight section of track and said second secondary conductor means comprises a conductor plate in the center of said curved section of track, each of said first and second secondary conductor plates being mounted for vertical motion and wherein said means for moving comprise means for selectively extending and retracting said first and second secondary conductor means.
Claim 11
Dependent Claim
32 words
The invention according to claim 9 wherein the first and second secondary conductor plates are located in the same plane as the reaction rail of the linear motor associated with said vehicle.
Claim 12
Dependent Claim
29 words
The invention according to claim 10 wherein a single plate is used to provide the function of both secondary conductor plate and the reaction rail of the linear motor.
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) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |