Patent US3217811A successfully refreshed from Google Patents.
US3217811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor head fairing for high speed vehicle
Assignee: RTX Corp
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Filing: 1964-12-16
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Granted: 1965-11-16
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Expires: 1984-12-16
Abstract
No abstract record available.
Inventors
- 👤 Edward S Hibyan
- 👤 Vacca Luigi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:13
CPC Classifications
B; B64; B64C; B64C7/00; B64C27/00; B64C27/04; B64C27/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
IN COMBINATION IN AN AIRCRAFT, A FUSELAGE, A ROTOR HEAD, MEANS MOUNTING SAID ROTOR HEAD OUTWARDLY FROM SAID FUSELAGE FOR ROTATION, ROTOR BLADES, SAID ROTOR HEAD HAVING MEMBERS FOR BLADE ATTACHMENT WHICH HAVE LAGLEAD MOVEMENT THEREWITH, MEANS CONNECTING A BLADE TO EACH OF SAID MEMBERS FOR BLADE ATTACHMENT, RIGID FAIRING MEANS ENCLOSING SAID ROTOR HEAD, SAID RIGID FAIRING MEANS HAVING A CUTOUT FOR EACH BLADE, MEANS MOUNTING SAID RIGID FAIRING MEMBER ON SAID ROTOR HEAD AGAINST TILTING RELATIVE TO SAID FUSELAGE, SAID MOUNTING MEANS INCLUDING A CONNECTION WHICH TRANSMITS LAG-LEAD MOVEMENT OF SAID BLADES TO SAID RIGID FAIRING MEANS WHEREBY IT IS MOVED WITH SAID BLADES.
Claim 2
Dependent Claim
106 words
IN COMBINATION IN AN AIRCRAFT, A FUSELAGE, A ROTOR HEAD, MEANS MOUNTING SAID ROTOR HEAD OUTWARDLY FROM SAID FUSELAGE FOR ROTATION, ROTOR BLADES, SAID ROTOR HEAD HAVING MEMBERS FOR BLADE ATTACHMENT WHICH HAVE LAGLEAD MOVEMENT THEREWITH, MEANS CONNECTING A BLADE TO EACH OF SAID MEMBERS FOR BLADE ATTACHMENT, RIGID FAIRING MEANS ENCLOSING SAID ROTOR HEAD, SAID RIGID FAIRING MEANS HAVING A CUTOUT FOR EACH BLADE, MEANS MOUNTING SAID RIGID FAIRING MEMBER ON SAID ROTOR HEAD AGAINST TILTING RELATIVE TO SAID FUSELAGE, SAID MOUNTING MEANS INCLUDING A CONNECTION WHICH TRANSMITS LAG-LEAD MOVEMENT OF SAID BLADES TO SAID RIGID FAIRING MEANS WHEREBY IT IS MOVED WITH SAID BLADES.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |