Patent US3355124A successfully refreshed from Google Patents.
US3355124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circular wing structure
Assignee: SKYCAR Inc
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Filing: 1965-12-27
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Granted: 1967-11-28
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Expires: 1985-12-27
Abstract
No abstract record available.
Inventors
- 👤 Cadwallader W Kelsey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:56
CPC Classifications
B; B64; B64C; B64C39/00; B64C39/06; B64C39/001; B64C39/062; B64C39/064
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A CIRCULAR WING STRUCTURE, COMPRISING A RIGID CENTER SUPPORT WITH A VERTICAL AXIS, AND SUBSTANTIALLY CIRCULAR UPPER AND LOWER WING SECTIONS OF WHICH EACH SECTION IS FORMED OF COMPLEMENTAL FLAT FLEXIBLE METAL SHEETS JOINED TOGETHER AT ADJACENT MARGINJS THEREOF, SAID WING SECTIONS BEING WITH CENTRAL PARTS THEREOF JOINED IN SAID SUPPORT IN VERTICALL SPACED RELATION WITH EACH OTHER AND BEING SECURED TO EACH OTHER AT THEIR OUTER PERIPHERIES FROM WHICH THEY DIVERGE TO SAID SUPPORT, WITH SAID WING SECTIONS BEING OVER THE EXTENT OF THEIR DIVERGENCE FROM THEIR OUTER PERIPHERIES TO SAID SUPPORT DEVOID OF ANY CONNECTIONS BETWEEN THEM, AND THE JOINTS OF THE SHEETS OF EACH WING SECTION LENDING RIGIDITY TO THE LATTER.
Claim 2
Dependent Claim
114 words
A CIRCULAR WING STRUCTURE, COMPRISING A RIGID CENTER SUPPORT WITH A VERTICAL AXIS, AND SUBSTANTIALLY CIRCULAR UPPER AND LOWER WING SECTIONS OF WHICH EACH SECTION IS FORMED OF COMPLEMENTAL FLAT FLEXIBLE METAL SHEETS JOINED TOGETHER AT ADJACENT MARGINJS THEREOF, SAID WING SECTIONS BEING WITH CENTRAL PARTS THEREOF JOINED IN SAID SUPPORT IN VERTICALL SPACED RELATION WITH EACH OTHER AND BEING SECURED TO EACH OTHER AT THEIR OUTER PERIPHERIES FROM WHICH THEY DIVERGE TO SAID SUPPORT, WITH SAID WING SECTIONS BEING OVER THE EXTENT OF THEIR DIVERGENCE FROM THEIR OUTER PERIPHERIES TO SAID SUPPORT DEVOID OF ANY CONNECTIONS BETWEEN THEM, AND THE JOINTS OF THE SHEETS OF EACH WING SECTION LENDING RIGIDITY TO THE LATTER.
References Cited (Backward Citations)
FR555937A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |