US3288226A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Teetering rotor hub assembly
Assignee: Fairchild Hiller Corp
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Filing: 1965-03-15
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Granted: 1966-11-29
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Expires: 1985-03-15
Abstract
No abstract record available.
Inventors
- 👤 Jr Harold E Lemont
- 👤 Gerhard J Sissingh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:16
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/32; B64C27/37; B64C27/41; B64C27/43
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
IN COMBINATION WITH THE UPWARDLY EXTENDING ROTOR SHAFT OF A ROTARY WING ARICRAFT, A LIFT WING ASSEMBLY INCLUDING A ROTOR HUB AND A PLURALITY OF ROTOR BLADES EXTENDING OUTWARDLY THEREFROM IN DIFFERENT DIRECTIONS, MOUNTING STRUCTURE CONNECTING SAID HUB WITH SAID ROTOR SHAFT SO AS TO BE ROTATABLY DRIVEN THEREBY AND SUPPORTING THE HUB FOR ANGULAR DISPLACEMENTS RELATIVE TO SAID ROTOR SHAFT ABOUT A TRANSVERSE AXIS GENERALLY NORMAL TO A PLANE INCLUDING THE AXIS OF ROTATION OF THE ROTOR SHAFT TO ENABLE THE TIP PATH PLANE DESCRIBED BY ROTATION OF SAID LIFT WING ASSEMBLY TO BE TILTED TO CHANGE THE ORIENTATION OF THE THRUST DEVELOPED THEREBY SO AS TO EFFECT CYCLIC CONTROL OF SUCH AIRCRAFT, AND A PLURALITY OF SPRING STRUCTURES EACH OFFSET TRANSVERSELY FROM THE AXIS OF ROTATION OF SAID ROTOR SHAFT AND BEING RESPECTIVELY CONNECTED BETWEEN SAID HUB AND ROTOR SHAFT IN A GENERALLY RIGHT-ANGLE DISPOSITION WITH RESPECT TO SUCH TRANSVERSE AXIS SO AS TO DEVELOP A CORRECTIVE FORCE BETWEEN SAID HUB AND ROTOR SHAFT TENDING TO RESTORE THE SAME TO A PREDETERMINED ORIENTATION FOLLOWING ANY RELATIVE ANGULAR DISPLACEMENT THEREBETWEEN ABOUT
Claim 2
Dependent Claim
182 words
IN COMBINATION WITH THE UPWARDLY EXTENDING ROTOR SHAFT OF A ROTARY WING ARICRAFT, A LIFT WING ASSEMBLY INCLUDING A ROTOR HUB AND A PLURALITY OF ROTOR BLADES EXTENDING OUTWARDLY THEREFROM IN DIFFERENT DIRECTIONS, MOUNTING STRUCTURE CONNECTING SAID HUB WITH SAID ROTOR SHAFT SO AS TO BE ROTATABLY DRIVEN THEREBY AND SUPPORTING THE HUB FOR ANGULAR DISPLACEMENTS RELATIVE TO SAID ROTOR SHAFT ABOUT A TRANSVERSE AXIS GENERALLY NORMAL TO A PLANE INCLUDING THE AXIS OF ROTATION OF THE ROTOR SHAFT TO ENABLE THE TIP PATH PLANE DESCRIBED BY ROTATION OF SAID LIFT WING ASSEMBLY TO BE TILTED TO CHANGE THE ORIENTATION OF THE THRUST DEVELOPED THEREBY SO AS TO EFFECT CYCLIC CONTROL OF SUCH AIRCRAFT, AND A PLURALITY OF SPRING STRUCTURES EACH OFFSET TRANSVERSELY FROM THE AXIS OF ROTATION OF SAID ROTOR SHAFT AND BEING RESPECTIVELY CONNECTED BETWEEN SAID HUB AND ROTOR SHAFT IN A GENERALLY RIGHT-ANGLE DISPOSITION WITH RESPECT TO SUCH TRANSVERSE AXIS SO AS TO DEVELOP A CORRECTIVE FORCE BETWEEN SAID HUB AND ROTOR SHAFT TENDING TO RESTORE THE SAME TO A PREDETERMINED ORIENTATION FOLLOWING ANY RELATIVE ANGULAR DISPLACEMENT THEREBETWEEN ABOUT
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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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |