Patent US3090455A successfully refreshed from Google Patents.
US3090455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plenum chamber type ground effect machine with self-propulsion and steering means
Assignee: Carwil Enterprises Inc
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Filing: 1958-09-29
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Granted: 1963-05-21
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Expires: 1978-09-29
Abstract
No abstract record available.
Inventors
- 👤 Walter A Crowley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:58
CPC Classifications
B; B60; B60V; B60V1/00; B60V1/04; B60V1/046
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A VEHICLE ADAPTED TO BE RAISED FROM A SURFACE BY GAS PRESSURE AND TRAVEL AND BE STEERED AT LOW ALTITUDE REPRESENTED BY A PERIMETRICAL GAS ESCAPE GAP RELATIVE TO SAID SURFACE, SAID VEHICLE INCLUDING A BODY HAVING AN UPWARDLY EXTENDING DOWNWARDLY OPEN HOLLOW UNDERSIDE FOR GAS, SAID HOLLOW UNDERSIDE BEING IN COMMUNICATION UNDER SAID BODY WITH THE ATMOSPHERE WHEN THE BODY IS RAISED OVER THE SURFACE TO BE TRAVELED, AND MEANS FOR VERTICALLY LIFTING, HORIZONTALLY PROPELLING AND STEERING THE VEHICLE, SAID MEANS INCLUDING PRESSURIZING MEANS ON THE VEHICLE AND COMMUNICATING WITH SAID HOLLOW UNDERSIDE FOR MAINTAINING GAS UNDER PRESSURE IN SAID HOLLOW UNDERSIDE AND IN CUSHION UNE SAID BODY FOR LIFTING THE VEHICLE UPWARD ONLY IN THE REGION OF GROUND EFFECT AND SUPPORTING THE VEHICLE INTO A HORIZONTALLY IDLE HOVERING POSITION WITH SAID
Claim 2
Dependent Claim
133 words
A VEHICLE ADAPTED TO BE RAISED FROM A SURFACE BY GAS PRESSURE AND TRAVEL AND BE STEERED AT LOW ALTITUDE REPRESENTED BY A PERIMETRICAL GAS ESCAPE GAP RELATIVE TO SAID SURFACE, SAID VEHICLE INCLUDING A BODY HAVING AN UPWARDLY EXTENDING DOWNWARDLY OPEN HOLLOW UNDERSIDE FOR GAS, SAID HOLLOW UNDERSIDE BEING IN COMMUNICATION UNDER SAID BODY WITH THE ATMOSPHERE WHEN THE BODY IS RAISED OVER THE SURFACE TO BE TRAVELED, AND MEANS FOR VERTICALLY LIFTING, HORIZONTALLY PROPELLING AND STEERING THE VEHICLE, SAID MEANS INCLUDING PRESSURIZING MEANS ON THE VEHICLE AND COMMUNICATING WITH SAID HOLLOW UNDERSIDE FOR MAINTAINING GAS UNDER PRESSURE IN SAID HOLLOW UNDERSIDE AND IN CUSHION UNE SAID BODY FOR LIFTING THE VEHICLE UPWARD ONLY IN THE REGION OF GROUND EFFECT AND SUPPORTING THE VEHICLE INTO A HORIZONTALLY IDLE HOVERING POSITION WITH SAID
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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) | 1966-05-20 | 1966-11-19 | 1967-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-20 | 1970-11-19 | 1971-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-20 | 1974-11-19 | 1975-05-21 | $7700.00 | Window Closed / Lapsed |