Patent ID: 7371050
Filing Date: 2008-05-13
Classification: F01D

Abstract:
1. A device for axially retaining blades on a rotor disk of a turbomachine, the device comprising an annulus that is mounted via a radially inner edge in an annular groove of the disk, and that bears via a radially outer edge against the roots of the blades mounted in grooves in the periphery of the disk, the device further comprising an annular lock received in the annular groove of the disk to prevent the annulus from turning in said annular groove, the radially inner edge of the annulus being festooned or crenellated, the annular groove of the disk comprising a radially outer edge that is festooned or crenellated, the annular lock comprising a radially inner portion that is festooned or crenellated, and said annular lock being turnable in the annular groove between an annulus-locking position and a position for mounting and dismounting in the annular groove.