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Damper and seal for propeller quill shaft

Fluid reaction surfaces (i.e. – impellers) – Having positive means for impeller adjustment – Power or manual actuator on non-rotatable part
Patent

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Device for adjusting a rotor blade of a wind energy turbine

Fluid reaction surfaces (i.e. – impellers) – Having positive means for impeller adjustment – Having pitch lock or adjustable stop
Reexamination Certificate

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Device for controlling the variation in pitch of the blades of a

Fluid reaction surfaces (i.e. – impellers) – Having positive means for impeller adjustment – Motor bodily rotatable with impeller hub or shaft
Patent

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Device for measuring the displacement travel of a hydraulic...

Fluid reaction surfaces (i.e. – impellers) – Having positive means for impeller adjustment – Motor bodily rotatable with impeller hub or shaft
Reexamination Certificate

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Devices for operating variable-pitch propellers

Fluid reaction surfaces (i.e. – impellers) – Having positive means for impeller adjustment – Motor bodily rotatable with impeller hub or shaft
Patent

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Drag operated rotor pitch adjustment system for gyroplanes

Fluid reaction surfaces (i.e. – impellers) – Having positive means for impeller adjustment – Power derived from impeller shaft
Patent

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Drive mechanism for adjusting the rotor blades of wind power...

Fluid reaction surfaces (i.e. – impellers) – Having positive means for impeller adjustment – Having pitch lock or adjustable stop
Reexamination Certificate

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Ducted fan and pitch controls for tail rotor of rotary wing airc

Fluid reaction surfaces (i.e. – impellers) – Having positive means for impeller adjustment – Power or manual actuator on non-rotatable part
Patent

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Ducted tail rotor for rotor craft

Fluid reaction surfaces (i.e. – impellers) – Having positive means for impeller adjustment – Power or manual actuator on non-rotatable part
Patent

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Ducted tail rotor providing torque reaction and yaw attitude con

Fluid reaction surfaces (i.e. – impellers) – Having positive means for impeller adjustment – Power or manual actuator on non-rotatable part
Patent

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