Actuator for a variable pitch propeller

Details Actuator for a variable pitch propeller Actuator for a variable pitch propeller

1995-01-17

1996-03-12

Denion, Thomas E.

Fluid reaction surfaces (i.e., impellers)

Having positive means for impeller adjustment

Motor bodily rotatable with impeller hub or shaft

416 61, 416153, 416160, 416162, 416167, B63H 302, B63H 306

Patent

active

054981352

ABSTRACT:
An actuator for varying the pitch of a plurality of propeller blades mounted on a propeller blade hub comprising an electric motor driving a drive gear, a reduction gear set driven by the drive gear and driving an externally threaded drive spool, an internally threaded pitch ring including a tangential slot, a pin received within the tangential slot and disposed on a blade hub to which the propeller blade is secured. Rotary movement of the drive gear, the reduction gear set, and the drive spool results in translational movement of the pitch ring. Translational movement of the pitch ring causes movement of the pin within the tangential slot, resulting in rotation of the propeller blade.

REFERENCES:
patent: 1857392 (1932-05-01), Nixon
patent: 2224640 (1940-12-01), Bonawit
patent: 3043374 (1962-07-01), Tourneau
patent: 3853427 (1974-12-01), Holt
patent: 3900274 (1975-08-01), Johnston et al.
patent: 4750862 (1988-06-01), Barnes et al.
patent: 5174716 (1992-12-01), Hora et al.
patent: 5186608 (1993-02-01), Bagge
patent: 5213472 (1993-05-01), Dumais

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