Patent US3117645A successfully refreshed from Google Patents.
US3117645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ground effect vehicle with curtain reinforcing means
Assignee: Hovercraft Development Ltd
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Filing: 1961-04-12
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Granted: 1964-01-14
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Expires: 1981-04-12
Abstract
No abstract record available.
Inventors
- 👤 Cockerell Christopher Sydney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:58
CPC Classifications
B; B60; B60V; B60V1/00; B60V1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A VEHICLE OF THE TYPE WHICH, IN OPERATION, IS AT LEAST PARTLY SUPPORTED ABOVE THE SURFACE OVER WHICH IT OPERATES BY A CUSHION OF PRESSURISED GAS, COMPRISING CUSHION CONTAINING MEANS INCLUDING A SUPPLY PORT FORMED IN THE BOTTOM OF THE VEHICLE AT THE REAR THEREOF, MEANS FOR FORMING A CURTAIN OF FLUID WHICH ISSUES FROM SAID SUPPLY PORT AND CONTAINS THE CUSHION AT THE REAR OF THE VEHICLE INCLUDING A FIRST FLUID INTAKE AND DUCT MEANS CONNECTING SAID FIRST INTAKE TO SAID SUPPLY PORT, AND MEANS FOR REINFORCING SAID CURTAIN COMPRISING A FORWARD FACING SECOND AIR INTAKE MOUNTED ON TOP OF THE VEHICLE, AN AIR DISCHARGE PORT FORMED IN THE BOTTOM OF THE VEHICLE OUTSIDE OF AND ADJACENT TO SAID SUPPLY PORT, AND DUCT MEANS FOR FEEDING AIR FROM SAID SECOND INTAKE TO SAID DISCHARGE PORT.
Claim 2
Dependent Claim
136 words
A VEHICLE OF THE TYPE WHICH, IN OPERATION, IS AT LEAST PARTLY SUPPORTED ABOVE THE SURFACE OVER WHICH IT OPERATES BY A CUSHION OF PRESSURISED GAS, COMPRISING CUSHION CONTAINING MEANS INCLUDING A SUPPLY PORT FORMED IN THE BOTTOM OF THE VEHICLE AT THE REAR THEREOF, MEANS FOR FORMING A CURTAIN OF FLUID WHICH ISSUES FROM SAID SUPPLY PORT AND CONTAINS THE CUSHION AT THE REAR OF THE VEHICLE INCLUDING A FIRST FLUID INTAKE AND DUCT MEANS CONNECTING SAID FIRST INTAKE TO SAID SUPPLY PORT, AND MEANS FOR REINFORCING SAID CURTAIN COMPRISING A FORWARD FACING SECOND AIR INTAKE MOUNTED ON TOP OF THE VEHICLE, AN AIR DISCHARGE PORT FORMED IN THE BOTTOM OF THE VEHICLE OUTSIDE OF AND ADJACENT TO SAID SUPPLY PORT, AND DUCT MEANS FOR FEEDING AIR FROM SAID SECOND INTAKE TO SAID DISCHARGE PORT.
References Cited (Backward Citations)
FR1238499A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-13 | 1967-07-15 | 1968-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-13 | 1971-07-15 | 1972-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-13 | 1975-07-15 | 1976-01-14 | $7700.00 | Window Closed / Lapsed |