US3302587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air sled freeway
Assignee: Individual
•
Filing: 1964-03-12
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Granted: 1967-02-07
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Expires: 1984-03-12
Abstract
No abstract record available.
Inventors
- 👤 Jr William C Knox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:56
CPC Classifications
B; B60; B60V; B60V3/00; B60V3/02; B60V3/04; A; A63; A63H; A63H18/00; A63H18/002; A63H33/00; A63H33/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
IN COMBINATION, TRACK MEANS PRESENTING AN UPPER TRAVEL SURFACE AND HAVING RESPECTIVE LONGITUDINAL PASSAGES FOR PRESSURIZED LIFT GAS AND PROPULSION GAS BENEATH SAID SURFACE, A PLURALITY OF UPWARDLY DIRECTED LIFT JETS SPACED ALONG SAID SURFACE AND FED BY SAID PRESSURIZED LIFT GAS, A PLURALITY OF PROPULSION JETS SPACED ALONG SAID SURFACE AND FED BY SAID PRESSURIZED PROPULSION GAS, EACH OF SAID PROPULSION JETS HAVING A JET COMPONENT IN A GIVEN TRAVEL DIRECTION ALONG SAID SURFACE, CONTROL MEANS FOR VARYING THE LIFT GAS PRESSURE AND THE PROPULSION GAS PRESSURE INDEPENDENTLY OF ONE ANOTHER AND A VEHICLE FOR SAID TRACK TRACK ADAPTED TO BE FLOATED ABOVE SAID PATH BY PRESSURIZED FLUID FROM SAID LIFT JETS AND HAVING A PLURALITY OF LONGITUDINALLY SPACED REACTION SURFACES FACING GENERALLY AWAY FROM SAID TRAVEL DIRECTION AND ARRANGED TO BE SUCCESSIVELY IMPINGED BY THE GAS FROM SAID PROPULSION JETS TO PROPEL THE VEHICLE OVER SAID TRAVEL SURFACE WHILE FLOATING.
Claim 2
Dependent Claim
152 words
IN COMBINATION, TRACK MEANS PRESENTING AN UPPER TRAVEL SURFACE AND HAVING RESPECTIVE LONGITUDINAL PASSAGES FOR PRESSURIZED LIFT GAS AND PROPULSION GAS BENEATH SAID SURFACE, A PLURALITY OF UPWARDLY DIRECTED LIFT JETS SPACED ALONG SAID SURFACE AND FED BY SAID PRESSURIZED LIFT GAS, A PLURALITY OF PROPULSION JETS SPACED ALONG SAID SURFACE AND FED BY SAID PRESSURIZED PROPULSION GAS, EACH OF SAID PROPULSION JETS HAVING A JET COMPONENT IN A GIVEN TRAVEL DIRECTION ALONG SAID SURFACE, CONTROL MEANS FOR VARYING THE LIFT GAS PRESSURE AND THE PROPULSION GAS PRESSURE INDEPENDENTLY OF ONE ANOTHER AND A VEHICLE FOR SAID TRACK TRACK ADAPTED TO BE FLOATED ABOVE SAID PATH BY PRESSURIZED FLUID FROM SAID LIFT JETS AND HAVING A PLURALITY OF LONGITUDINALLY SPACED REACTION SURFACES FACING GENERALLY AWAY FROM SAID TRAVEL DIRECTION AND ARRANGED TO BE SUCCESSIVELY IMPINGED BY THE GAS FROM SAID PROPULSION JETS TO PROPEL THE VEHICLE OVER SAID TRAVEL SURFACE WHILE FLOATING.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |