Abstract: A planetary gear assembly including a first planet carrier member (4) and a second planet carrier member (5) which are rotatable relative to each other, and also comprising elastic connection means to provide a preload between said first and second planet carrier members, wherein said elastic connection means include an elastic member (11) associated to one (4) of said first and second planet carrier members, and a pin (12) protruding from the other (5) of said first and second planet carrier members, and upon a rotation between the carrier members (4, 5), said pin (12) abuts against the elastic member (11) and causes a deflection of said elastic member (11).

Abstract: A backlash-free planetary gear assembly comprising at least a first planet carrier member (4) and a second planet carrier member (5), which are rotatable relative to each other around the axis (7) of said assembly, and are connected by elastic means (10, 14) arranged to elastically react to a rotation between said planet carrier members, said elastic means being tensioned when said first member and second member are rotationally aligned in a design operation condition, so that the assembly, in use, is preloaded with a torque which tends to rotate said first planet carrier member relative to said second planet carrier member, in order to recover backlash.

Abstract: A backlash-free planetary gear assembly comprising at least a first planet carrier member (4) and a second planet carrier member (5), which are rotatable relative to each other around the axis (7) of said assembly, and are connected by elastic means (10, 14) arranged to elastically react to a rotation between said planet carrier members, said elastic means being tensioned when said first member and second member are rotationally aligned in a design operation condition, so that the assembly, in use, is preloaded with a torque which tends to rotate said first planet carrier member relative to said second planet carrier member, in order to recover backlash.