Patent Number: 6,168,530

Title: Device for coaxially coupling two shafts, especially for a helicopter

Abstract: The annular cushion 25 interposed between the fixed housing 22, 23 and a swiveling exterior surface 27 in the shape of a spherical sector with relatively large radius of curvature of the bearing block 12, 15, 16, is in a relatively rigid and incompressible material, with low coefficient of friction surface, and has a transverse section wholly adapted to the section of the annular space arranged between the inner surface of the fixed housing 22, 23 and the swiveling exterior surface of the bearing block 12, 15, 16, this annular cushion consisting of two rings 25 spaced apart and arranged on each side of the transverse median plane of the swiveling exterior surface. The fixed housing also comprises adjustment means 24 of the axial engagement amplitude of the cover 23 on the body 22 of said fixed housing, and tightening adjustment means of the fixing screws, enabling in this way the radial compression of said relatively rigid annular cushion 25 to be adjusted on said swiveling exterior surface of the bearing block 12,15, 16.

Inventors: Guimbal; Bruno (Les Milles, FR), Zoppitelli; Elio (Velaux, FR), Jalaguier; Jean-Pierre (Vitrolles, FR)

Assignee: Eurocopter

International Classification: B64C 27/82 (20060101); B64D 35/00 (20060101); B64C 27/12 (20060101); B64C 27/00 (20060101); F16C 23/00 (20060101); F16C 27/06 (20060101); F16C 27/00 (20060101); F16C 23/08 (20060101); F16C 003/02 (); F16C 023/06 ()

Expiration Date: 01/02/2018