Patent US3185409A successfully refreshed from Google Patents.
US3185409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foldable rotary wing aircraft
Assignee: Hiller Aircraft Co Inc
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Filing: 1962-12-10
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Granted: 1965-05-25
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Expires: 1982-12-10
Abstract
No abstract record available.
Inventors
- 👤 Edward H Jacobsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:19
CPC Classifications
B; B64; B64C; B64C1/00; B64C1/06; B64C1/061; B64C1/063; B64C25/00; B64C25/32; B64C25/52; B64C2025/325; B64C27/00; B64C27/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
IN COMBINATION WITH AN AIRCRAFT HAVING A LANDING GEAR AND A LONGITUDINALLY EXTENDING TAIL BOOM, FULCRUM STRUCTURE INTEGRALLY PROVIDED BY SAID AIRCRAFT AND DEFINING A STRUCTURAL COMPONENT THEREOF AND ABOUT WHICH THE AIRCRAFT IS ROCKABLE INTO AN ELONGATED POSITION IN WHICH SAID LANDING GEAR IS THEN RELIEVED OF ITS AIRCRAFT-SUPPORTING FUNCTION, THE LONGITUDINAL DISTANCE BETWEEN SAID FULCRUM STRUCTURE AND THE CENTER OF GRAVITY OF SAID AIRCRAFT BEING
Claim 2
Dependent Claim
67 words
IN COMBINATION WITH AN AIRCRAFT HAVING A LANDING GEAR AND A LONGITUDINALLY EXTENDING TAIL BOOM, FULCRUM STRUCTURE INTEGRALLY PROVIDED BY SAID AIRCRAFT AND DEFINING A STRUCTURAL COMPONENT THEREOF AND ABOUT WHICH THE AIRCRAFT IS ROCKABLE INTO AN ELONGATED POSITION IN WHICH SAID LANDING GEAR IS THEN RELIEVED OF ITS AIRCRAFT-SUPPORTING FUNCTION, THE LONGITUDINAL DISTANCE BETWEEN SAID FULCRUM STRUCTURE AND THE CENTER OF GRAVITY OF SAID AIRCRAFT BEING
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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) | 1968-05-24 | 1968-11-23 | 1969-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-24 | 1972-11-23 | 1973-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-24 | 1976-11-23 | 1977-05-25 | $7700.00 | Window Closed / Lapsed |