US3275090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for increasing the effectiveness of air cushion vehicles
Assignee: Individual
•
Filing: 1958-10-16
•
Granted: 1966-09-27
•
Expires: 1978-10-16
Abstract
No abstract record available.
Inventors
- 👤 Weiland Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:00
CPC Classifications
B; B60; B60V; B60V1/00; B60V1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
THE METHOD OF SUPPORTING A BODY, HAVING A SUBSTANTIALLY AIRTIGHT UNDERSURFACE, ABOVE AND IN CLOSE PROXIMITY TO A PRESSURE-RETAINING LOWER SURFACE, THE STEPS COMPRISING: EMITTING AIR UNDER PRESSURE FROM AND BENEATH THE BODY TO DEVELOP BETWEEN THE UNDERSURFACE AND A LOWER SURFACE A CUSHION OF AIR UNDER SUPERATMOSPHERIC PRESSURE SUFFICIENT TO LIFT THE BODY TO A STABLE ELEVATION ABOVE THE LOWER SURFACE; AND RETARDING THE FLOW OF AIR OUTWARDLY FROM BETWEEN THE SURFACES ALONG AT LEAST A PORTION OF THE PERIPHERY OF THE UNDERSURFACE BY EMITTING FROM THE BODY A DOWNWARDLY-DIRECTED JET-LIKE CURTAIN OF AIR EXTENDING ALONG THE PERIPHERAL PORTION OF THE UNDERSURFACE, AND SPACED OUTWARDLY OF THE LOCATION WHERE THE AIR WAS EMITTED TO DEVELOP THE CUSHION.
Claim 2
Independent Claim
118 words
THE METHOD OF SUPPORTING A BODY, HAVING A SUBSTANTIALLY AIRTIGHT UNDERSURFACE, ABOVE AND IN CLOSE PROXIMITY TO A PRESSURE-RETAINING LOWER SURFACE, THE STEPS COMPRISING: EMITTING AIR UNDER PRESSURE FROM AND BENEATH THE BODY TO DEVELOP BETWEEN THE UNDERSURFACE AND A LOWER SURFACE A CUSHION OF AIR UNDER SUPERATMOSPHERIC PRESSURE SUFFICIENT TO LIFT THE BODY TO A STABLE ELEVATION ABOVE THE LOWER SURFACE; AND RETARDING THE FLOW OF AIR OUTWARDLY FROM BETWEEN THE SURFACES ALONG AT LEAST A PORTION OF THE PERIPHERY OF THE UNDERSURFACE BY EMITTING FROM THE BODY A DOWNWARDLY-DIRECTED JET-LIKE CURTAIN OF AIR EXTENDING ALONG THE PERIPHERAL PORTION OF THE UNDERSURFACE, AND SPACED OUTWARDLY OF THE LOCATION WHERE THE AIR WAS EMITTED TO DEVELOP THE CUSHION.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |