Patent ID: 7048510

Claim:
A propeller spinner ( 5 ) for a marine propeller ( 1 ) having multiple propeller blades ( 2 ) attached to a propeller hub ( 3 ) that is adapted for attachment to a propeller shaft ( 4 ) and the propeller spinner ( 5 ) being adapted for attachment to the propeller shaft ( 4 ) and comprising a sacrificial anodic material for protecting at least one of the propeller shaft ( 4 ) and the propeller hub ( 3 ) from corrosion, the propeller spinner ( 5 ) comprising: a hollow spinner cone ( 6 ) made of a non-anodic material, said spinner cone ( 6 ) having at least one perforation ( 7 ) in an outer peripheral surface thereof, and an anodic insert body ( 9 ) made of said sacrificial anodic material, said insert body ( 9 ) being substantially contained within the hollow spinner cone ( 6 ), the insert body ( 9 ) having at least one radial protrusion ( 10 ) extending at least partially through said perforation ( 7 ) in the spinner cone ( 6 ).