US3208543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air cushion vehicle
Assignee: AMF Inc
•
Filing: 1961-07-19
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Granted: 1965-09-28
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Expires: 1981-07-19
Abstract
No abstract record available.
Inventors
- 👤 Walter A Crowley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:59
CPC Classifications
B; B60; B60V; B60V1/00; B60V1/04; B60V1/046
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
AN AIR CUSHION VEHICLE UTILIZING ESSENTIALLY A DUAL PRESSURE AIR SYSTEM COMPRISING A BASE, AN OPEN PLENUM CHAMBER FUNCTIONING AS THE MAIN VEHICLE LIFTING MEDIUM FORMED AT THE UNDERSIDE OF SAID BASE, A SECOND SUBSTANTIALLY ENCLOSED PLENUM CHAMBER IN SAID VEHICLE POSITIONED OVER SAID OPEN PLENUM CHAMBER, AIR OUTLETS IN SAID ENCLOSED CHAMBER ARRANGED TO EXPEL AIR IN A DIRECTION SUBSTANTIALLY TRANSVERSE TO THE LIFT DIRECTION TO PROVIDE STEERAGE AND THRUST FOR SAID VEHICLE, A FIRST AIR GENERATING SOURCE FOR THE OPEN PLENUM CHAMBER, AND A SECOND AIR GENERATING SOURCE PROVIDING AIR OF A RELATIVELY HIGHER PRESSURE FOR SAID CLOSED PLENUM CHAMBER.
Claim 2
Dependent Claim
102 words
AN AIR CUSHION VEHICLE UTILIZING ESSENTIALLY A DUAL PRESSURE AIR SYSTEM COMPRISING A BASE, AN OPEN PLENUM CHAMBER FUNCTIONING AS THE MAIN VEHICLE LIFTING MEDIUM FORMED AT THE UNDERSIDE OF SAID BASE, A SECOND SUBSTANTIALLY ENCLOSED PLENUM CHAMBER IN SAID VEHICLE POSITIONED OVER SAID OPEN PLENUM CHAMBER, AIR OUTLETS IN SAID ENCLOSED CHAMBER ARRANGED TO EXPEL AIR IN A DIRECTION SUBSTANTIALLY TRANSVERSE TO THE LIFT DIRECTION TO PROVIDE STEERAGE AND THRUST FOR SAID VEHICLE, A FIRST AIR GENERATING SOURCE FOR THE OPEN PLENUM CHAMBER, AND A SECOND AIR GENERATING SOURCE PROVIDING AIR OF A RELATIVELY HIGHER PRESSURE FOR SAID CLOSED PLENUM CHAMBER.
References Cited (Backward Citations)
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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) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |