Patent ID: 6527516
Filing Date: 2003-03-04
Classification: F04D,Y10T

Abstract:
Device for fixing a fan-blade assembly onto a shaft suitable for being driven in rotation along a central axis by a motor, comprising a drive hub (24) integral with the shaft (12) and adapted to be a support for a hub (16) of the blade assembly (10), and a stop ring (26) slipped on around the shaft and equipped with elastic recall means (44), so as to press the hub (16) of the fan assembly (10) elastically against the drive hub (24), wherein said elastic recall means (44) abuts said hub radially outside a gap between said elastic recall means (44) and said hub, wherein the elastic means for recall of the stop ring (26) comprise a plurality of elastic tongues (44) extending radially within a central aperture (42) of the stop ring, and wherein the elastic tongues (44) are of generally biconical shape.