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US3581666A
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US
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Ground-effect transportation system
Assignee: Bertin Technologies SAS
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Filing: 1969-06-12
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Granted: 1971-06-01
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Expires: 1989-06-12
Abstract
Abstract A transportation system comprising a prepared track, a groundeffect machine movable therealong with the interposition of at least one pressure-fluid cushion, and means for propelling the machine, said means comprising at least two toothed membersnamely one gearwheel and one member reacting with the gearwheel teeth-borne the one by the machine and the other by the track and drive means for rotating the gearwheel, the toothed members having tooth systems which mesh with one another, at least one of the tooth systems being at least partly formed by a rubberlike resilient material.
Inventors
- 👤 Jean Henri Bertin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:47
CPC Classifications
B; B60; B60V; B60V3/00; B60V3/02; B60V3/04; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/1967
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
92 words
A transportation system comprising a track, a ground effect machine guided along said track and conjugate means fitted respectively on said track and on said machine for driving said machine relatively to said track, said conjugate means comprising a rack component and a pinion component in mesh with each other, i. at least one of said components being at least partly formed of a resilient elastomeric material, and ii. said components having a mutual gear design of such friction angle Alpha and pressure angle Beta that tan Alpha > tan Beta .
Claim 2
Dependent Claim
92 words
A transportation system comprising a track, a ground effect machine guided along said track and conjugate means fitted respectively on said track and on said machine for driving said machine relatively to said track, said conjugate means comprising a rack component and a pinion component in mesh with each other, i. at least one of said components being at least partly formed of a resilient elastomeric material, and ii. said components having a mutual gear design of such friction angle Alpha and pressure angle Beta that tan Alpha > tan Beta .
Claim 3
Dependent Claim
23 words
A transportation system as claimed in claim 1, wherein said rack component comprises a grating of uniformly spaced rods forming an openwork lattice.
Claim 4
Dependent Claim
71 words
A transportation system as claimed in claim 1, wherein said track is an elevated track having an undersurface, one of said components is fitted on said undersurface, said machine is suspended underneath said undersurface and lifted by ground effect towards the same, and the other of said components is fitted at the top of said machine, whereby said components are urged into mesh with each other by said lifting ground effect.
Claim 5
Dependent Claim
39 words
A transportation system as claimed in claim 3, wherein said track comprises a top upwardly exposed bearing surface, and said machine comprises an overtopping flanged carrier structure overlapping said bearing surface with the interposition of a pressure fluid cushion.
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) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |