4. Fluid reaction surfaces (i.e., impellers)
  5. Interrelated controls for impeller and drive means
  6. Pitch adjustment related to drive brake or clutch operation

David L. Joyce

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Active clearance control for gas turbine engine

Boots – shoes – and leggings
Patent

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Aircraft pitch change mechanism

Fluid reaction surfaces (i.e. – impellers) – Interrelated controls for impeller and drive means – Pitch adjustment related to drive brake or clutch operation
Patent

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Propeller pitch control

Fluid reaction surfaces (i.e. – impellers) – With control means responsive to non-cyclic condition... – Impeller rotation speed responsive
Patent

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Sensor ice shield

Aeronautics and astronautics – Aircraft structure – Ice prevention
Patent

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