4. Fluid reaction surfaces (i.e., impellers)
  5. Radially extensible or retractible rotor working member

Lee N. Hager

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Drive system for a variable diameter tilt rotor

Fluid reaction surfaces (i.e. – impellers) – Radially extensible or retractible rotor working member
Patent

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Locking control and overtravel safety stop system for variable l

Fluid reaction surfaces (i.e. – impellers) – Radially extensible or retractible rotor working member
Patent

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Retractable helicopter rotor

Aeronautics and astronautics – Aircraft – heavier-than-air – Helicopter or auto-rotating wing sustained – i.e. – gyroplanes
Patent

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Variable diameter rotor blade actuation system

Fluid reaction surfaces (i.e. – impellers) – Radially extensible or retractible rotor working member
Patent

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