Patent ID: 6514044
Filing Date: 2003-02-04
Classification: B64C

Abstract:
In a variable pitch propeller assembly including a hub rotatable about a hub axis, at least one propeller blade having an end journaled in said hub for rotation about a blade axis that is generally perpendicular to said hub axis, a blade pin on said end of each blade and offset from the respective blade axis, a reciprocal blade actuator in said hub engaging said blade pin and operable, upon reciprocation, to cause said blades to rotate about said blade axes, and bearings interposed between said reciprocal blade actuation and said blade pins, the improvement wherein each said bearing includes a race having a crowned surface with a predetermined radius of curvature engaging said reciprocal blade actuator, the center point of the radius of curvature of said crowned surface being offset to one side of a plane perpendicular to said blade axis and extending through the center of the race.