Patent ID: 9291145
Filing Date: 2016-03-22
CPC Classification: F03B,F04D,Y02E,Y10T

Claim Text:
1. A propeller for a hydraulic machine, intended to be crossed by a flow, the propeller including a hub extending along an axis of rotation of the propeller and vanes extending from the hub, the propeller consisting of at least three sectors each including a body which, once the sectors are assembled, form together the hub, and each vane being firmly attached to the body of a sector, the sectors being assembled together in order to form the propeller by means of at least one shrunk-on ring which is placed around the bodies of the sectors, wherein the hub is hollow, wherein each sector comprises a side wall and a projection which is firmly attached to the side wall and which protrudes towards the inside of the hub, perpendicularly to the axis, and wherein the sectors are further assembled together in order to form the propeller by means of at least one washer assembled to the projection of each sector, inside the hub, by means of added attachment elements, and wherein once assembled together, the projections inside the hub form an annular ring.