US3121544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety and high lift system and apparatus for aircraft
Assignee: Individual
•
Filing: 1962-01-08
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Granted: 1964-02-18
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Expires: 1982-01-08
Abstract
No abstract record available.
Inventors
- 👤 Alvarez-Calderon Alberto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:24
CPC Classifications
B; B64; B64C; B64C23/00; B64C23/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A FLUID SUSTAINED VEHICLE HAVING A CENTRAL BODY PORTION WITH A PAIR OF WINGS MOUNTED ON SAID BODY PORTION; A PAIR OF FLUID-TRANSPORTING PROPULSIVE IMPELLERS MOUNTED ON SAID VEHICLE ON OPPOSITE SIDES OF SAID BODY PORTION; SPANWISE SHAFT MEANS ROTATABLY MOUNTED ON SAID WINGS SUBSTANTIALLY IMMEDIATELY ADJACENT TO SAID WINGS AND HAVING AN UPPER SHAFT SURFACE EXPOSED TO THE FLUID FLOW, WITH SAID UPPER SHAFT SURFACE MOVING REARWARDLY IN A DOWNSTREAM DIRECTION TO ENERGIZE THE FLOW OF THE UPPER SURFACE OF SAID WINGS; SAID SHAFT MEANS INTERCONNECTING SAID
Claim 2
Dependent Claim
88 words
A FLUID SUSTAINED VEHICLE HAVING A CENTRAL BODY PORTION WITH A PAIR OF WINGS MOUNTED ON SAID BODY PORTION; A PAIR OF FLUID-TRANSPORTING PROPULSIVE IMPELLERS MOUNTED ON SAID VEHICLE ON OPPOSITE SIDES OF SAID BODY PORTION; SPANWISE SHAFT MEANS ROTATABLY MOUNTED ON SAID WINGS SUBSTANTIALLY IMMEDIATELY ADJACENT TO SAID WINGS AND HAVING AN UPPER SHAFT SURFACE EXPOSED TO THE FLUID FLOW, WITH SAID UPPER SHAFT SURFACE MOVING REARWARDLY IN A DOWNSTREAM DIRECTION TO ENERGIZE THE FLOW OF THE UPPER SURFACE OF SAID WINGS; SAID SHAFT MEANS INTERCONNECTING SAID
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) | 1967-02-17 | 1967-08-19 | 1968-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-17 | 1971-08-19 | 1972-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-17 | 1975-08-19 | 1976-02-18 | $7700.00 | Window Closed / Lapsed |