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US3272271A
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Air cushion vehicles having movable cushion-containing walls
Assignee: Hovercraft Development Ltd
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Filing: 1964-06-16
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Granted: 1966-09-13
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Expires: 1984-06-16
Abstract
No abstract record available.
Inventors
- 👤 Cockerell Christopher Sydney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:00
CPC Classifications
B; B60; B60V; B60V1/00; B60V1/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A VEHICLE FOR TRAVELLING OVER A SURFACE AND WHICH, IN OPERATION, IS SUPPORTED, AT LEAST IN PART, ABOVE THE SURFACE BY A CUSHION OF PRESSURISED GAS FORMED BENEATH THE VEHICLE, THE CUSHION BEING CONTAINED FOR AT LEAST PART OF ITS PERIPHERY BY A WALL MOVABLY ATTACHED TO THE VEHICLE BODY AND WHEREIN, IN PROVIDING SUPPORT FOR THE VEHICLE, GAS STREAMS BETWEEN THE WALL AND SAID SURFACE, COMPRISING MEANS FOR SENSING VARIATIONS IN THE FLOW CHARACTERISTICS OF THE GAS STREAM RESULTING FROM A VARIATION IN THE CLEARANCE BETWEEN THE LOWER EDGE OF SAID WALL AND SAID SURFACE, AND MEANS OPERATIVELY CONTROLLED BY SAID SENSING MEANS FOR MOVING THE WALL VERTICALLY IN RESPONSE TO SUCH VARIATION IN FLOW CHARACTERISTICS.
Claim 2
Dependent Claim
117 words
A VEHICLE FOR TRAVELLING OVER A SURFACE AND WHICH, IN OPERATION, IS SUPPORTED, AT LEAST IN PART, ABOVE THE SURFACE BY A CUSHION OF PRESSURISED GAS FORMED BENEATH THE VEHICLE, THE CUSHION BEING CONTAINED FOR AT LEAST PART OF ITS PERIPHERY BY A WALL MOVABLY ATTACHED TO THE VEHICLE BODY AND WHEREIN, IN PROVIDING SUPPORT FOR THE VEHICLE, GAS STREAMS BETWEEN THE WALL AND SAID SURFACE, COMPRISING MEANS FOR SENSING VARIATIONS IN THE FLOW CHARACTERISTICS OF THE GAS STREAM RESULTING FROM A VARIATION IN THE CLEARANCE BETWEEN THE LOWER EDGE OF SAID WALL AND SAID SURFACE, AND MEANS OPERATIVELY CONTROLLED BY SAID SENSING MEANS FOR MOVING THE WALL VERTICALLY IN RESPONSE TO SUCH VARIATION IN FLOW CHARACTERISTICS.
References Cited (Backward Citations)
US3191705A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |