Patent ID: 6905311

Claim:
A fan blade assembly comprising a fan rotor and a plurality of circumferentially spaced radially extending fan blades, the fan rotor having a plurality of circumferentially spaced axially extending slots in the periphery of the fan rotor, each of the fan blades having a root portion which locates in one of the plurality of axially extending slots in the periphery of the fan rotor, each axially extending slot having a respective one of a plurality of slider members, each slider member being locatable between the fan blade root portion and the bottom of the axially extending slot, each axially extending slot having a respective one of a plurality of biasing means, each biasing means being locatable between the fan blade root portion and the slider member, each axially extending slot having a respective one of a plurality of wedges, each wedge being locatable between the slider member and the biasing means, each wedge being movable axially between a first position in which the wedge moves the biasing means radially outwardly into engagement with the fan blade root portion to at least reduce vibration of the fan blade and a second position in which the wedge allows the biasing means to move radially inwardly to allow assembly or disassembly of the fan blade, wherein each wedge comprises a first surface at a first end of the wedge, a second surface at the second end of the wedge, the second surface being arranged parallel to the first surface and a third inclined surface connects the first surface and the second surface and the parallel surfaces extend perpendicular to the radial direction.