Patent US3118504A successfully refreshed from Google Patents.
US3118504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for control of rotary wing aircraft
Assignee: Bell Aerospace Corp
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Filing: 1961-02-13
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Granted: 1964-01-21
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Expires: 1981-02-13
Abstract
No abstract record available.
Inventors
- 👤 Wesley L Cresap
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:51
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/52; B64C27/54
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
75 words
A ROTARY WING AIRCRAFT COMPRISING A FUSELAGE, A FLEXIBLE MAST ATTACHED TO SAID FUSELAGE, A ROTOR FIXEDLY ATTACHED TO SAID MAST, CYCLIC PITCH CONTROL MEANS CONNECTED TO SAID ROTOR, INTERCONNECTING LINKAGE BETWEEN SAID MAST AND SAID CYCLIC PITCH CONTROL MEANS, SAID LINKAGE UPON BENDING OF SAID FLEXIBLE MAST MOVING SAID CYCLIC PITCH CONTROL AND, ACCORDINGLY, CHANGING CYCLIC PITCH IN THE ROTOR TO CREATE MOMENTS IN THE MAST IN OPPOSITION TO SAID BENDING OF THE MAST.
References Cited (Backward Citations)
US2418407A
Cited
US2739769A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-20 | 1967-07-22 | 1968-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-20 | 1971-07-22 | 1972-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-20 | 1975-07-22 | 1976-01-21 | $7700.00 | Window Closed / Lapsed |