Marine propeller structure

摘要

A marine propeller has at least two blades each having a body, a vane and connection members that enable the blades to be fixed together. The blades are formed with a one-piece vane and the bodies are attached to one another and with the bodies form the central hub of the propeller that may be fitted on a ship's shaft after mounting.

主权项

1. A propeller (1) comprising:
at least three blades (2) each having a body (3) of a spiral form such that each body (3) when mounted to one another form a propeller hub; each blade including a vane (5) extending outwardly from each body (3), wherein each body (3) comprises two opposite spiral first side surfaces (7) and a front surface and a back surface; each blade being a single piece with the vane and body; wherein each body (3) comprises at least two connection holes passing parallel to an axis of rotation of the propeller and passing through the front surface, first side surface and back surface of the body; each blade body being positioned with another of said blade bodies against the spiral first side surfaces such that the blade bodies so positioned form a segmented hub; and a plurality of connection members (6) each passing through a connection hole through the front surface, first side surface and back surface of said bodies such that the segmented hub is secured together.