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Patent US4233905A successfully refreshed from Google Patents.
US4233905A
Expired / Lapsed
US
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Magnetically suspended vehicle
Assignee: Alstom Transportation Germany GmbH
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Filing: 1977-07-12
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Granted: 1980-11-18
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Expires: 1997-07-12
Abstract
Abstract The magnets supporting a magnetic suspension vehicle are vibrationally isolated from the vehicle body by mounting a number of the magnets on each chassis with individual spring arrangements whose reactive moments are greater than the pitch and roll moments tending to deflect the magnets.
Inventors
- 👤 Eveline Gottzein
- 👤 Christian Roche
- 👤 Gerhard Bohn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:07
CPC Classifications
H; H02; H02N; H02N15/00; B; B61; B61B; B61B13/00; B61B13/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
107 words
A magnetic suspension vehicle for use with a rail, comprising a vehicle body, a plurality of suspension magnets, a carrier mounted on the body for carrying said magnets and positioning the magnets beneath the rail, said magnets being longitudinally aligned, a plurality of spring means each individually coupling one of the magnets to said carrier, said vehicle when operating subjecting said magnets to pitch and roll moments, said spring means each having a size and spring constant to impart stabilizing moments to the magnets in the pitch and roll axes which are greater than the pitch and roll moments to which each of said magnets is subjected.
Claim 2
Dependent Claim
107 words
A magnetic suspension vehicle for use with a rail, comprising a vehicle body, a plurality of suspension magnets, a carrier mounted on the body for carrying said magnets and positioning the magnets beneath the rail, said magnets being longitudinally aligned, a plurality of spring means each individually coupling one of the magnets to said carrier, said vehicle when operating subjecting said magnets to pitch and roll moments, said spring means each having a size and spring constant to impart stabilizing moments to the magnets in the pitch and roll axes which are greater than the pitch and roll moments to which each of said magnets is subjected.
Claim 3
Dependent Claim
33 words
A vehicle as in claim 1, wherein each of said spring means includes a plurality of spring elements supporting a portion of one of said magnets, said elements being spaced from each other.
Claim 4
Dependent Claim
61 words
A vehicle as in claim 1, wherein said spring means including a pair of flat resilient plates cantilevered from said carrier, a bracket between the cantilevered ends of said plates for securing said plates to each other, one of said plates being located above the other, and rigid means securing the upper one of said plates to one of said magnets.
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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) | 1983-11-18 | 1984-05-19 | 1984-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-18 | 1988-05-19 | 1988-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-18 | 1992-05-19 | 1992-11-18 | $7700.00 | Window Closed / Lapsed |