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US3616760A
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Auxiliary propulsion for air-cushion vehicles
Assignee: Société d'étude de l'Aérotrain SA
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Filing: 1969-12-03
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Granted: 1971-11-02
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Expires: 1989-12-03
Abstract
Abstract AN AIR CUSHION VEHICLE INCLUDING A GROUND-EFFECT PROPULSION SYSTEM CONSISTING OF A MAIN PROPULSION SYSTEM AND AN AUXILIARY PROPULSION SYSTEM USABLE DURING CERTAIN OPERATING CONDITIONS OF THE VEHICLE OVER PORTIONS OF THE VEHICLE TRACK. THE AUXILIARY PROPULSION SYSTEM IS CONSTITUTED OF ONE OR MORE RETRACTABLE WHEELS ACTUATED BY A HYDRAULIC SYSTEM AND IS INTENDED FOR USE BELOW A PREDETERMINED VEHICULAR TRANSITION SPEED.
Inventors
- 👤 Rene Lucien
- 👤 Pierre Marie Ghobert
- 👤 Yves Andre Pascal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:27
CPC Classifications
B; B60; B60V; B60V3/00; B60V3/02; B60V3/04
Claims Analysis
Total Claims: 0
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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) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |