Patent ID: 9429031
Filing Date: 2016-08-30
CPC Classification: F01D,F02C,F05D

Claim Text:
1. A hub for a radial housing of a helical ring of a turbomachine with variable-pitch blades, said ring comprising an annular rotor body and a plurality of radial housings distributed over said annular rotor body around a central axis, said hub comprising: a piece separate from the annular rotor body, configured to be received in the radial housing of the annular rotor body, an internal surface of said piece being adapted to receive a cylindrical blade support crown and at least one of centering or guiding means for rotation of the cylindrical blade support crown; and two pins projecting relative to an external surface of the hub to fasten said external surface to edges of the radial housing of the annular rotor body, the two projecting pins forming a centering axis, wherein said internal surface comprises a machined area adapted to receive bearing rings of the cylindrical blade support crown, and wherein the hub further comprises two rims adapted to be supported on the edges of the radial housing when the pins are in place on the edges of the radial housing.