Patent US4721111A successfully refreshed from Google Patents.
Patent US3087439A successfully refreshed from Google Patents.
US3087439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyance system
Assignee: Individual
•
Filing: 1959-11-30
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Granted: 1963-04-30
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Expires: 1979-11-30
Abstract
No abstract record available.
Inventors
- 👤 Petrocokino Denis Dimitri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:05
CPC Classifications
B; B61; B61B; B61B13/00; B61B13/12; B61B13/122
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
IN A CONVEYANCE SYSTEM, IN COMBINATION, MEANS DEFINING A CONTINUOUS TUNNEL, A VEHICLE MOVABLE IN THE TUNNEL IN SUBSTANTIALLY SEALING RELATION WITH THE INNER TUNNEL SURFACE, RECESSED MEANS IN THE OUTER SURFACE OF THE VEHICLE ALONG A MAJOR PART OF THE LENGTH THEREOF TO DEFINE A SUBSTANTIALLY SEALED ANNULAR SPACE BETWEEN THE VEHICLE AND TUNNEL SURFACES, DISCHARGE ORIFICES SPACED ALONG THE WALL OF THE TUNNEL DISCHARGING RAM AIR FROM SAID SEALED ANNULAR SPACE, AN AIR INLET IN A FORWARD END OF THE VEHICLE, MEANS IN THE VEHICLE FOR BOOSTING THE ENERGY CONTENT OF RAM JET AIR ENTERING SAID INLET AT HIGH VEHICLE SPEEDS, MEANS FOR DISCHARGING AT LEAST A MAJOR PORTION OF THE THUS BOOSTED RAM AIR REARWARDLY OF THE VEHICLE AS A PROPULSIVE JET, AND MEANS FOR DISCHARGING A FRACTION OF SAID RAM AIR INTO SAID SEALED ANNULAR SPACE TO FLOATINGLY CENTER THE VEHICLE IN THE TUNNEL.
Claim 2
Dependent Claim
148 words
IN A CONVEYANCE SYSTEM, IN COMBINATION, MEANS DEFINING A CONTINUOUS TUNNEL, A VEHICLE MOVABLE IN THE TUNNEL IN SUBSTANTIALLY SEALING RELATION WITH THE INNER TUNNEL SURFACE, RECESSED MEANS IN THE OUTER SURFACE OF THE VEHICLE ALONG A MAJOR PART OF THE LENGTH THEREOF TO DEFINE A SUBSTANTIALLY SEALED ANNULAR SPACE BETWEEN THE VEHICLE AND TUNNEL SURFACES, DISCHARGE ORIFICES SPACED ALONG THE WALL OF THE TUNNEL DISCHARGING RAM AIR FROM SAID SEALED ANNULAR SPACE, AN AIR INLET IN A FORWARD END OF THE VEHICLE, MEANS IN THE VEHICLE FOR BOOSTING THE ENERGY CONTENT OF RAM JET AIR ENTERING SAID INLET AT HIGH VEHICLE SPEEDS, MEANS FOR DISCHARGING AT LEAST A MAJOR PORTION OF THE THUS BOOSTED RAM AIR REARWARDLY OF THE VEHICLE AS A PROPULSIVE JET, AND MEANS FOR DISCHARGING A FRACTION OF SAID RAM AIR INTO SAID SEALED ANNULAR SPACE TO FLOATINGLY CENTER THE VEHICLE IN THE TUNNEL.
References Cited (Backward Citations)
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Cited
US1336732A
Cited
US2511979A
Cited
US2514875A
Cited
FR966602A
Cited
US2717744A
Cited
US2864318A
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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) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |