PROPELLER FOR SAILING BOATS WITH VARIABLE PITCH WITH AUTOMATIC RETURN TO FEATHERED POSITION WITHOUT GEARS

摘要

A variable pitch propeller (100) is described, comprising an external central body (10-11) and a plurality of rotatable blades (5), protruding from said central body (10-11), said central body (10-11) housing, in its interior, a hub (1) of a drive shaft (2) which is placed coaxial to said hub (1),said central body (10-11) housing in its interior a device to transform, in an automatic manner, the rotary motion of said hub (1) or of said drive shaft (2) into rotary motion of said at least one blade (5) around its axis with respect to said body of said propeller (100),said device being coupled to at least one of said blades (5) and to said hub (1) or to said drive shaft (2),characterised in that said device is a modified Scottish yoke kinematic system contained inside said central body (10-11).