Patent ID: 8951018
Filing Date: 2015-02-10
Classification: B63H

Abstract:
1. A variable pitch propeller suitable for use in association with a marine internal combustion engine, the propeller comprising: a hub; and a plurality of blades, each of the plurality of blades being pivotally connected to the hub so as to pivot about a pitch axis between a first pitch angle and a second pitch angle, the first pitch angle corresponds to a pitch angle for which the variable pitch propeller produces a forward thrust, the second pitch angle corresponds to a pitch angle for which the variable pitch propeller produces a negative thrust, each of the plurality of blades having: each of the blades of the plurality of having an intermediate position intermediate the first pitch angle and the second pitch angle, in the intermediate positions of the plurality of blades, the proximal end of the leading edge of one of the plurality of blades being disposed radially between the hub and the portion of the trailing edge of another one of the plurality of blades defining the notch the other one of the plurality of the blades being adjacent the one of the plurality of the blades, the propeller having a diameter of less than 40 inches.