Marine craft variable pitch propeller - has mechanism which can set different blades at different pitch angles

摘要

The variable pitch propeller for a marine craft has each blade (10,11) mounted in a bearing in the propeller hub (12) so that the blade can rotate about a radial axis. Each blade has a spindle which extends radially into the hub and carries a pinion. Each pinion meshes with a toothed rack which moves parallel to the propeller axis in order to change the blade pitch. The mechanism is so designed, that when each blade lies momentarily in a plane tangential to the hull of the craft, each blade, or each group of blades, can be adjusted to a different pitch angle. USE - Variable pitch propeller for marine craft.