Patent US3286780A successfully refreshed from Google Patents.
US3286780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible skirt with chains for air cushion borne vehicles
Assignee: Vinters Armstrongs Ltd
•
Filing: 1964-03-13
•
Granted: 1966-11-22
•
Expires: 1984-03-13
Abstract
No abstract record available.
Inventors
- 👤 Yates Grahame George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:20
CPC Classifications
B; B60; B60V; B60V1/00; B60V1/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
AN AIR CUSHION VEHICLE COMPRISING A VEHICLE BODY, THERE BEING AN AIR CUSHION SPACE UNDER SAID BODY, A FLEXIBLE SKIRT DEPENDING FROM THE UNDERSIDE OF THE BODY FOR MINIMISING LEAKAGE OF AIR LATERALLY FROM SAID SPACE, AND CHAINS DEPENDING FROM THE UNDERSIDE OF THE VEHICLE BODY AT SPACED LOCATIONS ALONG THE FLEXIBLE SKIRT, SAID CHAINS AND SKIRT ENGAGING EACH OTHER AT SAID LOCATIONS, EACH CHAIN COMPRISING A PLURALITY OF LINK MEMBERS CONNECTED IN SERIES FROM THE VEHICLE BODY DOWN TO THE LOWER PORTION OF THE FLEXIBLE SKIRT AND BEING FOLDABLE VERTICALLY BUT LATERALLY RIGID IN A DIRECTION PERPENDICULAR TO THE GENERAL DIRECTION OF THE SKIRT ADJACENT THAT CHAIN, SAID CHAINS CO-OPERATING WITH SAID SKIRT FOR RESTRAINING OUTWARD MOVEMENT OF THE LATTER UNDER THE INFLUENCE OF PRESSURE OF AIR IN THE CUSHION.
Claim 2
Dependent Claim
131 words
AN AIR CUSHION VEHICLE COMPRISING A VEHICLE BODY, THERE BEING AN AIR CUSHION SPACE UNDER SAID BODY, A FLEXIBLE SKIRT DEPENDING FROM THE UNDERSIDE OF THE BODY FOR MINIMISING LEAKAGE OF AIR LATERALLY FROM SAID SPACE, AND CHAINS DEPENDING FROM THE UNDERSIDE OF THE VEHICLE BODY AT SPACED LOCATIONS ALONG THE FLEXIBLE SKIRT, SAID CHAINS AND SKIRT ENGAGING EACH OTHER AT SAID LOCATIONS, EACH CHAIN COMPRISING A PLURALITY OF LINK MEMBERS CONNECTED IN SERIES FROM THE VEHICLE BODY DOWN TO THE LOWER PORTION OF THE FLEXIBLE SKIRT AND BEING FOLDABLE VERTICALLY BUT LATERALLY RIGID IN A DIRECTION PERPENDICULAR TO THE GENERAL DIRECTION OF THE SKIRT ADJACENT THAT CHAIN, SAID CHAINS CO-OPERATING WITH SAID SKIRT FOR RESTRAINING OUTWARD MOVEMENT OF THE LATTER UNDER THE INFLUENCE OF PRESSURE OF AIR IN THE CUSHION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |