US3276723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vtol flight unit
Assignee: Astro Kinetics Corp
•
Filing: 1964-02-28
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Granted: 1966-10-04
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Expires: 1984-02-28
Abstract
No abstract record available.
Inventors
- 👤 James W Miller
- 👤 Harvey H Houde
- 👤 Fremout W Burger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:49
CPC Classifications
B; B64; B64C; B64C29/00; B64C29/0008; B64C29/0016; B64C29/0025; B64C39/00; B64C39/06; B64C39/062; B64C39/064
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A FLIGHT UNIT ADAPTED TO BE USED FOR SUBSTANTIALLY VERTICAL TAKE-OFF AND LANDING, COMPRISING: (A) AN ANNULAR SHROUD HAVING AN OPEN UPPER END AND AN OPEN LOWER END, (B) AN AIR-MOVING MEANS MOUNTED IN SAID SHROUD FOR CAUSING AN AIR FLOW INTO SAID OPEN UPPER END OF SAID SHROUD AND OUT OF SAID LOWER OPEN END THEREOF FOR CREATING A FIRST LIFTING FORCE, (C) AN AIRFOIL DISPOSED BELOW THE LOWER END OF SAID SHROUD AND OVER WHICH AIR FLOWING FROM SAID LOWER END PASSES FOR CREATING ANOTHER LIFTING FORCE, (D) AN INNER DIFFUSER MEMBER EXTENDING INTO SAID SHROUD FOR DIFFUSING THE AIR OUTWARDLY AS THE AIR DISCHARGES FROM SAID OPEN LOWER END OF SAID SHROUD AND FOR DIRECTING SUCH DIFFUSED AIR OVER SAID AIRFOIL,
Claim 2
Dependent Claim
124 words
A FLIGHT UNIT ADAPTED TO BE USED FOR SUBSTANTIALLY VERTICAL TAKE-OFF AND LANDING, COMPRISING: (A) AN ANNULAR SHROUD HAVING AN OPEN UPPER END AND AN OPEN LOWER END, (B) AN AIR-MOVING MEANS MOUNTED IN SAID SHROUD FOR CAUSING AN AIR FLOW INTO SAID OPEN UPPER END OF SAID SHROUD AND OUT OF SAID LOWER OPEN END THEREOF FOR CREATING A FIRST LIFTING FORCE, (C) AN AIRFOIL DISPOSED BELOW THE LOWER END OF SAID SHROUD AND OVER WHICH AIR FLOWING FROM SAID LOWER END PASSES FOR CREATING ANOTHER LIFTING FORCE, (D) AN INNER DIFFUSER MEMBER EXTENDING INTO SAID SHROUD FOR DIFFUSING THE AIR OUTWARDLY AS THE AIR DISCHARGES FROM SAID OPEN LOWER END OF SAID SHROUD AND FOR DIRECTING SUCH DIFFUSED AIR OVER SAID AIRFOIL,
References Cited (Backward Citations)
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Cited
US1123589A
Cited
US2008464A
Cited
US2978206A
Cited
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Cited
US3107071A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |