Patent ID: 8297929

Claim:
A mounting arrangement of blades on a hub ( 5 ) of a wind power turbine comprising a bearing ( 11 ) between each blade root ( 13 ) and a corresponding hub connection ( 15 ) having an outer ring ( 23 ) and an inner ring ( 25 ), wherein said inner ring ( 25 ) has reinforcing plates ( 30 , 31 ) of thickness T 2 and T 3 for minimizing its deflection, and said arrangement further comprises a stiffening plate ( 33 ) of thickness T 1 attached at least on a part of the outer ring ( 23 ) on a side ( 29 ) opposed to a side ( 37 ) joined to the hub connection ( 15 ) so that the stiffness of the upper and lower surfaces of the bearing ( 11 ) is equalized.