PROPELLER

摘要

A propeller such as a ship's propeller or screw comprises at least one propeller blade, and a propeller drive shaft. The propeller blade is mounted on the propeller drive shaft by employing a hub having a free end secured on the propeller drive shaft. The hub is provided with a central bore in the free end thereof. A pivot axis is defined mounted within the hub and perpendicular to the axis of the drive shaft. The pivot axis comprises a pivot shaft.