Patent US3199601A successfully refreshed from Google Patents.
US3199601A
Expired / Lapsed
US
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Flight control system
Assignee: RTX Corp
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Filing: 1962-02-02
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Granted: 1965-08-10
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Expires: 1982-02-02
Abstract
No abstract record available.
Inventors
- 👤 James C Dean
- 👤 Jr John A Keder
- 👤 Albert J Tolomeo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:51
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/32; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18184; Y10T74/182; Y10T74/20; Y10T74/20012; Y10T74/20189; Y10T74/20207; Y10T74/20213; Y10T74/2022
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
125 words
IN COMBINATION IN A HELICOPTER; A ROTOR HEAD; BLADES MOUNTED ON SAID HEAD FOR PITCH CHANGING MOVEMENT; FIRST MEANS FOR CYCLICALLY CHANGING THE PITCH OF SAID BLADES TO PROVIDE LATERAL MOVEMENT OF SAID HELIICOPTER; SECOND MEANS FOR CYCLICALLY CHANGIING THE PITCH OF SAID BLADES TO PROVIDE LONGITUDINAL MOVEMENT OF SID HELICOPTER; A TAIL ROTOR; SAID TAIL ROTOR HAVING TAIL ROTOR BLADES MOUNTED FOR PITCH CHANGING MOVEMENT; THIRD MEANS FOR COLLECTIVELY CHANGING THE PITCH OF SAID TAIL ROTOR BLADES; AND FOURTH MEANS FOR ACTUATING SAID FIRST MEANS FOR CYCLICALLY CHANGING THE PITCH OF SAID BLADES, SAID SECOND MEANS FOR CYCLICALLY CHANGING THE PITCH OF SAID BLADES, AND SAID THIRD MEANS FOR COLLECTIVELY CHANGING THE PITCH OF SAID TAIL ROTOR BLADES TO PROVIDE A COLLECTIVE PITCH CHANGE.
References Cited (Backward Citations)
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US2698059A
Cited
US2877856A
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US3109496A
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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) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |