US3272272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air cushion vehicles having vertical collapsible 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
- 👤 Hall Kenneth
- 👤 Bliss Denys Stanley
- 👤 Charity Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:18
CPC Classifications
B; B60; B60V; B60V1/00; B60V1/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A VEHICLE WHICH, IN OPERATION, IS SUPPORTED ABOVE A SURFACE, AT LEAST IN PART, BY A CUSHION OF PRESSURISED GAS FORMED AND CONTAINED BENEATH THE VEHICLE, COMPRISING A HOLLOW WALL FOR DOWNWARD PROJECTION BENEATH THE VEHICLE BODY SO AS TO CONTAIN, AT LEAST IN PART, THE CUSHION, THE WALL BEING COLLAPSIBLE IN AN UPWARD DIRECTION, MEANS FOR APPLYING A SUCTION TO THE INTERIOR OF THE WALL TO REDUCE THE PRESSURE THEREIN BELOW THAT OF THE SPACE SURROUNDING SAID WALL AND THEREBY PROMOTE COLLAPSE OF SAID WALL, INLET MEANS FOR SUPPLYING FLUID TO THE INTERIOR OF THE WALL TO RELIEVE SAID SUCTION AND THEREBY AVERT SAID COLLAPSE, AND INLET CONTROL MEANS RESPONSIVE TO VARIATIONS IN THE DISTANCE BETWEEN THE BOTTOM OF THE WALL AND THE SURFACE BELOW THE VEHICLE FOR REDUCING THE SUPPLY OF FLUID BY SAID INLET MEANS AND THEREBY DIMINISHING RELIEF OF THE SUCTION AS SAID DISTANCE DECREASES.
Claim 2
Dependent Claim
149 words
A VEHICLE WHICH, IN OPERATION, IS SUPPORTED ABOVE A SURFACE, AT LEAST IN PART, BY A CUSHION OF PRESSURISED GAS FORMED AND CONTAINED BENEATH THE VEHICLE, COMPRISING A HOLLOW WALL FOR DOWNWARD PROJECTION BENEATH THE VEHICLE BODY SO AS TO CONTAIN, AT LEAST IN PART, THE CUSHION, THE WALL BEING COLLAPSIBLE IN AN UPWARD DIRECTION, MEANS FOR APPLYING A SUCTION TO THE INTERIOR OF THE WALL TO REDUCE THE PRESSURE THEREIN BELOW THAT OF THE SPACE SURROUNDING SAID WALL AND THEREBY PROMOTE COLLAPSE OF SAID WALL, INLET MEANS FOR SUPPLYING FLUID TO THE INTERIOR OF THE WALL TO RELIEVE SAID SUCTION AND THEREBY AVERT SAID COLLAPSE, AND INLET CONTROL MEANS RESPONSIVE TO VARIATIONS IN THE DISTANCE BETWEEN THE BOTTOM OF THE WALL AND THE SURFACE BELOW THE VEHICLE FOR REDUCING THE SUPPLY OF FLUID BY SAID INLET MEANS AND THEREBY DIMINISHING RELIEF OF THE SUCTION AS SAID DISTANCE DECREASES.
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) | 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 |