US3339655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skirts for surface effect devices to reduce drag and air cushion disturbances
Assignee: Bertin Technologies SAS
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Filing: 1965-10-18
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Granted: 1967-09-05
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Expires: 1985-10-18
Abstract
No abstract record available.
Inventors
- 👤 Guienne Paul Francois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:59
CPC Classifications
B; B60; B60V; B60V1/00; B60V1/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A PRESSURE GAS CUSHION SUSTAINED MOVABLE BODY COMPRISING A PLATFORM WITH AN UNDERFACE, AND A WALL DEPENDING FROM SAID UNDERFACE AND ADAPTED TO ENCLOSE LATERALLY SAID CUSHION, SAID WALL BEING IN THE SHAPE OF A FRUSTUM OF A CONE HAVING A CLOSED TOP LARGER BASE ATTACHED TO SAID PLATFORM AND AN OPEN BOTTOM SMALLER BASE FACING THE SURFACE OVER WHICH SAID BODY IS DESIGNED TO MOVE, THE AXIS OF SAID FRUSTUM OF A CONE AS WELL AS THE REARMOST GENERATRIX THEREOF BEING INCLINED FROM TOP TO BOTTOM TOWARDS THE REAR OF SAID BODY.
Claim 2
Dependent Claim
93 words
A PRESSURE GAS CUSHION SUSTAINED MOVABLE BODY COMPRISING A PLATFORM WITH AN UNDERFACE, AND A WALL DEPENDING FROM SAID UNDERFACE AND ADAPTED TO ENCLOSE LATERALLY SAID CUSHION, SAID WALL BEING IN THE SHAPE OF A FRUSTUM OF A CONE HAVING A CLOSED TOP LARGER BASE ATTACHED TO SAID PLATFORM AND AN OPEN BOTTOM SMALLER BASE FACING THE SURFACE OVER WHICH SAID BODY IS DESIGNED TO MOVE, THE AXIS OF SAID FRUSTUM OF A CONE AS WELL AS THE REARMOST GENERATRIX THEREOF BEING INCLINED FROM TOP TO BOTTOM TOWARDS THE REAR OF SAID BODY.
References Cited (Backward Citations)
FR80047E
Cited
US3254731A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |