Patent US3269477A successfully refreshed from Google Patents.
US3269477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicles for travelling over a surface
Assignee: Hovercraft Development Ltd
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Filing: 1964-03-06
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Granted: 1966-08-30
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Expires: 1984-03-06
Abstract
No abstract record available.
Inventors
- 👤 Hall Kenneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:24
CPC Classifications
B; B60; B60V; B60V1/00; B60V1/04; B60V1/046; B60V1/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A VEHICLE FOR TRAVELLING OVER A SURFACE AND WHICH IS SUPPORTED ABOVE THAT SURFACE, AT LEAST IN PART, BY A CUSHION OF PRESSURISED GAS FORMED AND CONTAINED IN A SPACE BENEATH THE VEHICLE, WHEREIN THE CUSHION IS CONTAINED FOR AT LEAST PART OF ITS PERIPHERY BY A DEFLECTABLE WALL STRUCTURE, INCLUDING AN UPPER WALL MEMBER DEPENDING BELOW AND FLEXIBLY CONNECTED TO THE BOTTOM OF THE VEHICLE, AND A LOWER WALL MEMBER DEPENDING BELOW THE UPPER WALL MEMBER AND HAVING ITS UPPER END PIVOTALLY ATTACHED TO SAID UPPER WALL MEMBER FOR MOVEMENT ABOUT A HORIZONTAL AXIS, THE UPPER PART OF THE LOWER WALL MEMBER BELOW SAID AXIS OVERLAPPING THE LOWER PART OF THE UPPER WALL MEMBER ON THAT SIDE OF THE UPPER WALL MEMBER NEAREST TO THE CUSHION, WHEREBY THE CUSHION PRESSURE ACTING ON THE LOWER WALL MEMBER TENDS TO RESIST REFLECTION OF SAID LOWER WALL MEMBER.
Claim 2
Dependent Claim
146 words
A VEHICLE FOR TRAVELLING OVER A SURFACE AND WHICH IS SUPPORTED ABOVE THAT SURFACE, AT LEAST IN PART, BY A CUSHION OF PRESSURISED GAS FORMED AND CONTAINED IN A SPACE BENEATH THE VEHICLE, WHEREIN THE CUSHION IS CONTAINED FOR AT LEAST PART OF ITS PERIPHERY BY A DEFLECTABLE WALL STRUCTURE, INCLUDING AN UPPER WALL MEMBER DEPENDING BELOW AND FLEXIBLY CONNECTED TO THE BOTTOM OF THE VEHICLE, AND A LOWER WALL MEMBER DEPENDING BELOW THE UPPER WALL MEMBER AND HAVING ITS UPPER END PIVOTALLY ATTACHED TO SAID UPPER WALL MEMBER FOR MOVEMENT ABOUT A HORIZONTAL AXIS, THE UPPER PART OF THE LOWER WALL MEMBER BELOW SAID AXIS OVERLAPPING THE LOWER PART OF THE UPPER WALL MEMBER ON THAT SIDE OF THE UPPER WALL MEMBER NEAREST TO THE CUSHION, WHEREBY THE CUSHION PRESSURE ACTING ON THE LOWER WALL MEMBER TENDS TO RESIST REFLECTION OF SAID LOWER WALL MEMBER.
References Cited (Backward Citations)
US3191705A
Cited
US3204715A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |