US3174570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicles for travelling over land and/or water
Assignee: Hovercraft Development Ltd
•
Filing: 1961-03-01
•
Granted: 1965-03-23
•
Expires: 1981-03-01
Abstract
No abstract record available.
Inventors
- 👤 Cockerell Christopher Sydney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:42
CPC Classifications
B; B60; B60V; B60V1/00; B60V1/02; B60V1/14; B60V1/15
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A VEHICLE FOR OPERATING OVER A SURFACE, BEING AT LEAST PARTLY SUPPORTED ABOVE THAT SURFACE BY A CUSHION OF PRESSURISED GAS CONTAINED AT LEAST IN PART BY A FLUID CURTAIN, COMPRISING MEANS ON SAID VEHICLE ARRANGED TO DISCHARGE AT LEAST ONE JET OF FLUID IN SUCH A WAY AS TO RESULT IN THE FORMATION OF AT LEAST A PART OF SAID FLUID CURTAIN IN A REGION EXPOSED ON MOVEMENT OF THE VEHICLE TO THE FORMATION OF POSITIVE STAGNATION PRESSURE, AND MEANS FOR REDUCING THE POSITIVE STAGNATION PRESSURE INDCIDENT ON THAT PART OF SAID CURTAIN ADJACENT TO THE REGION IN WHICH SAID PRESSURE IS SET UP, INCLUDING AT LEAST ONE AIR INTAKE POSITIONED OUTBOARD OF SAID CURTAIN ADJACENT TO AND DIRECTED TOWARDS SAID REGION, AND MEANS FOR DRAWING AIR INTO THE VEHICLE THROUGH SAID INTAKE FROM SAID REGION.
Claim 2
Dependent Claim
137 words
A VEHICLE FOR OPERATING OVER A SURFACE, BEING AT LEAST PARTLY SUPPORTED ABOVE THAT SURFACE BY A CUSHION OF PRESSURISED GAS CONTAINED AT LEAST IN PART BY A FLUID CURTAIN, COMPRISING MEANS ON SAID VEHICLE ARRANGED TO DISCHARGE AT LEAST ONE JET OF FLUID IN SUCH A WAY AS TO RESULT IN THE FORMATION OF AT LEAST A PART OF SAID FLUID CURTAIN IN A REGION EXPOSED ON MOVEMENT OF THE VEHICLE TO THE FORMATION OF POSITIVE STAGNATION PRESSURE, AND MEANS FOR REDUCING THE POSITIVE STAGNATION PRESSURE INDCIDENT ON THAT PART OF SAID CURTAIN ADJACENT TO THE REGION IN WHICH SAID PRESSURE IS SET UP, INCLUDING AT LEAST ONE AIR INTAKE POSITIONED OUTBOARD OF SAID CURTAIN ADJACENT TO AND DIRECTED TOWARDS SAID REGION, AND MEANS FOR DRAWING AIR INTO THE VEHICLE THROUGH SAID INTAKE FROM SAID REGION.
References Cited (Backward Citations)
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Cited
US2364677A
Cited
US2387627A
Cited
US2461435A
Cited
US2834560A
Cited
US2932468A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |